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Calculate Percentage in Excel – with 7 Formula Examples

Author: Sun Last Modified: 2023-06-08

Video: Calculate percentage

 


Get the percentage of total

 

Example 1: Get the percentage of a given total

For example, you have some values in column B (B2:B4), and the total number of these values is in cell B5 as below screenshot shown:

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Now you want to get the percentage of each value of the total, please do as below:

Step 1: Use formula to get the percentage of each value of the total

1. Select a blank cell, here is C2, type below formula, then press Enter key to get the first percentage:

=B2/$B$5
Note: To make the denominator an absolute reference, either type the dollar sign ($) manually or click the cell reference in formula bar and press F4 key.

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2. Then double click at the auto fill handle (the small green square in the right corner of the formula result cell) to fill the formula to below cells.

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Step 2: Format result as percentage

Select the result cells, then click Home tab, and go to Number group, select Percentage Style. (Or you can use shortcuts Shift + Ctrl + % to format cells as percentage.)

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Now the results are shown in percentage formatting.

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Note: You can change the decimal number by clicking Increase Decimal doc increase decimal or Decrease Decimal doc decrease decimal in Number group under Home tab.

Example 2: Get the percentage of an unknown total

For example, there is a table that contains the scores of students. Now you want to get the percentage of score 1 of each total:

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Step 1: Use formula to get the percentage of each value of the total

1. Select a blank cell, here is D8, type below formula, then press Enter key to get the first percentage:

=B8/SUM(B8:C8)
NoteSUM function is used to get the total of numbers. SUM(B8:C8) gets the total scores of Lisa.

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2. Then double click at the auto fill handle (the small green square in the right corner of the formula result cell) to fill the formula to below cells.

doc double click 2

Step 2: Format result as percentage

Select the result cells, then click Home tab, and go to Number group, select Percentage Style. (Or you can use shortcuts Shift + Ctrl + % to format cells as percentage.)

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Now the results are shown in percentage formatting.

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Note: You can change the decimal number by clicking Increase Decimal doc increase decimal or Decrease Decimal doc decrease decimal in Number group under Home tab.

Get the percentage of change between two numbers

 

Let’s say the income of company A in year 2022 is $3,000,000, and the income of company A in year 2021 is $2,680,000, what is the percentage of change between these two years? You can calculate the difference by subtracting the new income (2022) to the original income (2021), then dividing the result by the original income (2021).

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Step 1: Use formula to get the percentage of each value of the total

Select a blank cell, here is C9, type below formula, then press Enter key to get the percentage of change:

=(B9-A9)/A9
Note: Operation in parentheses will be calculated first. Cell A9 contains the older price (2021), Cell B9 contains the newer price (2022).

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If you want to apply this formula to below cells, double click at the auto fill handle (the small green square in the right corner of the formula result cell) to fill.

Step 2: Format result as percentage

Select the result cell, then click Home tab, and go to Number group, select Percentage Style. (Or you can use shortcuts Shift + Ctrl + % to format cells as percentage.)

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Now the result is shown in percentage formatting.

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Notes:
  1. If the difference result is positive, which means that the last value is increased compare to the first one. If the result is negative, which means that the last value is decreased compare to the first one.

  2. You can change the decimal number by clicking Increase Decimal doc increase decimal or Decrease Decimal doc decrease decimal in Number group under Home tab.

  3. In the formula, if the divisor (the older value) is zero or blank, the formula will return #DIV/0! error value. For avoiding this, you can use formula:

    =IF(A9=0,1,(B9-A9)/A9)

    Then the result is returned 100%.

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  4. If you do not want to format the result as percentage, you can multiply the result by 100:

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Increase or decrease a number by a percentage

 

Example 1: Increase a number by a percentage

Let’s say that your annual salary is $320000 last year, your company decides to increase your annual salary by 20% this year, how much you will earn this year?

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Select a blank cell, here is C17, type below formula, then press Enter key:

=A17*(1+B17)
Note: Operation in parentheses will be calculated firstly. Cell A17 contains the original number, cell B17 contains the increase percentage.

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Example 2: Decrease a number by a percentage

Suppose the manager wants to decrease the advertising cost of $10,000 by 25% next month, what is the new monthly advertising cost?

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Select a blank cell, here is C21, type below formula, then press Enter key:

=A21*(1-B21)
Note: Operation in parentheses will be calculated firstly. Cell A21 contains the original number, cell B21 contains the decrease percentage.

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Get the total by given amount and percentage

 

Suppose the sale price of a laptop is $120, which is 20% off the original price. The question is what is the original price of this laptop?

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Select a blank cell, here is G9, type below formula, then press Enter key to get the total number:

=E9/(1-F9)
Note: Operation in parentheses will be calculated first. Cell E9 contains the sale price, cell F9 contains the discount percentage.

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Get the amount by given total and percentage

 

If the original price of a coat is $110, but you need to pay additional 12% in sales tax, how much you need to pay for the sales tax?

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Select a blank cell, here is C13, type below formula, then press Enter key:

=A13*B13
Note: Cell A13 contains the price, cell B13 contains the tax percentage.

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