Calculate Cumulative Percentage in Excel (With Examples)


Often you may want to calculate a cumulative percentage of some dataset. Fortunately this is easy to do using built-in functions in Excel.

The following step-by-step example shows how to calculate cumulative percentages in Excel.

Step 1: Enter the Data

First, let’s create a dataset that shows the number of units that some company sells during consecutive years:

Step 2: Calculate Cumulative Frequency

Next, let’s use the following formula to calculate the cumulative frequency of the first row:

We can then copy and paste this formula to each remaining cell in column C:

Step 3: Calculate Cumulative Percentage

Next, we can use the following formula to calculate the cumulative percentage of the first row:

We can then copy and paste this formula to the remaining cells in column D:

Step 4: Change Formatting to Percentage

Lastly, we can highlight each of the cumulative percentage values in column D and then press Ctrl+Shift+% to convert the formatting to percentages:

We interpret the cumulative percentages as follows:

  • About 6% of all sales were made in year 1.
  • About 13% of all sales were made in years 1 and 2 combined.
  • About 20% of all sales were made in years 1, 2, and 3 combined.

And so on.

Additional Resources

How to Calculate Cumulative Frequency in Excel
How to Calculate a Cumulative Average in Excel
How to Calculate Moving Averages in Excel

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