In Google Sheets, is there any way that the "Grand Total" of a column in a Pivot Table is something different than the values of the column represents? (for instance, in a sum column, show the average).
An example would be in a sheet with daily sales of several products. You want in the column for each product to show the yearly sales (sum column), but the grand total to show the average of the values in the column.
This is very easy to do in Excel, since you can configure the Grand Total to be other function. I have not been able to find the same functionality in Google Sheets.
Edit: Original question was badly formulated.

