Percentage formula doesn't work for expandable columns.

In the "Financial Reporting Center" section by opening the "Workspace for Financial Reports" several reports have been configured. I have an issue... In column A (as an example - since it happens for all other columns) I have made a field "expandable". Unfortunately by inserting the custom formula " (Cell[17, A]/Cell[8, A])*100 ", when I launch the report and expand "column A" the result is that the percentage entered is repeated for the expanded columns. The expected result is that each column will have its own percentage calculation. Below is a screenshot of the issue.