We can apply a formula to calculate the running sums or running totals easily in Excel as follows:

1. Besides the Amount column, type Running SUM or Running Average in Cell D1.

2. Enter the formula =SUM($D$3:D3) into the Cell E3, and press the Enter key.

Tips: If you need to calculate the running average, use this formula: =AVERAGE($D$3:D3)

3. Keep the formula cell selected, and drag its AutoFill Handle to apply the formula to other cells.

Now you will get all running sums/totals or running averages in the specific column.

One click to add a running sum line & labels for a cluster column chart

The cluster column chart is quite common and useful in statistic works. Now, Kutools for Excel releases a chart tool – Add Cumulative Sum to Chart to quickly add a cumulative total line and all cumulative total labels for a cluster column chart by only one click!

Apart from the above formula, we can also calculate running sums or running totals with Pivot Table in Excel. And you can get it done as follows:

1.Select original table, and then click the Insert > PivotTable.

2. In the opening Create PivotTable dialog box, check the Existing Worksheet option, then select a cell in current worksheet to locate the Pivot table in the Location box, and click the OK button.

Note: If you want to place the PivotTable on a new worksheet, select the New Worksheet option.

3. In the coming PivotTable Fields pane, drag the Date field from Choose fields to add to report box to the Rows box, and drag Amount field to the Values box (or you can just check these two boxes to show them in the ROWS and VALUES boxes). See the screenshot on the left below:

4. Right click the Sum of Amount in the Pivot Table, and then select Show Value As > Running Total IN in the right-clicking menu. See the screenshot on the right above:

5. In the popping out Show Values As dialog box, click the Base Filed box and specify a filed from the drop down list, and then click the OK button.

Note: In Excel 2007, right click the Sum of Amount in the Pivot Table and then select Value Field Settings from the right-clicking menu; next in the Value Field Setting dialog box click the Show Value as tab, then click the Show Value as box and select the Running Total in from the drop down list, and at last click the OK button. See below screen shot:

Then you will get all running sums or running totals in the pivot table at once.