Today, we can add calculated column (and edit the required formula) to a list report, there is a need to see the data of these calculated columns also in pivot report, but that is not available..
Thank you for your idea. This is currently possible.
After creating your list report with a calculated column, you can change the view to a pivot. You will then be able to find your calculated column by selecting the gear icon, then Edit data > Add fields (in the rows, columns, or cells sections) > Recent.