How do I calculate "calculated rows" in power BI

Hi all,

I have a dataset displaying the P&L for different periods/types.

The columns show the values for: Previous Year, Actuals, Forecast, Dec Forecast, etc.

Rows show the accounts: Sales, Margin, etc.

I am trying to display this information on a Matrix Visualization.

What we would like to do is for example to use as rows Sales, Margin and "create" a third row with a measure of the margin percentage for each one of the scenarios, which are displayed in columns. The idea is that this calculation would vary according to any filters that are applied.

Example:

Accounts   |      Previous Year      |          Actuals          |        Forecast       |    Dec Forecast

Sales                    100                                100                          100                     100

GM                        20                                  30                            40                       55

% GM                   20%                              30%                        40%                    55%

Does anyone have an idea how to do it or if it is possible to be done?

Thank you,