Another Row After SubTotal in Matrix

I have a Matrix in Report, with SubTotals of rows and columns.

I want to add another row below the subtotal (as well as another column to the left) in order to display percentage. Could anyone please tell me how?

There is a work around. you need to add one more column and display percentage in that column, this would add a column after total column and would display the sum of percentage column.

Then you reduce the width of the column (the column that you have manually added) to 0.

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First, Thanks for your reply.

I Tried it, but it doesn't work.

When I set the width of the added column to 0, the total row becomes 0 too.

?