Help of summarizing row header

In the table above - Actual is a calculated field using the following formula:

(calculate((Sum('BacklogData'[Recognized])),NEXTMONTH(BacklogData[Month].[Date]))) -(Sum('BacklogData'[Recognized]))))

The raw data does not have the amount "actual" so i have to calculate it by taking the amount recognized in the next month minus the amount recognized in the current month. This all works fine for my purposes.

What i cannot get to work is the row subtotal for Actual to be non-zero. I would like for it to show the sum of the amount "Actual" in the rows. It is instead applying my formula at the row header level, which gives a different and incorrect result.

Help?