Matrix Visual - Show measure as just a column

[CoordAnalytics]

I work in a school district that uses Power BI. I need to create a visualization that breaks down enrollment by building, by grade with a subtotal for the current year. But then I need a row with the subtotal of the enrollment count from last year and a column that shows th difference. When I build it in a matrix, and add my measure for last year enrollment count it shows last year enrollment count by grade level. I need it to look more like the first image here which is a Google sheet. The second image is what it looks like in desktop. Is there a way to stop the matrix from breaking down the last year value by grade?

[Fowmy · Accepted solution]

@CoordAnalytics 

You can wrap your calculation within 

IF ( NOT ( ISFILTERED ( TABLE[GRADE]) , [YOUR MEASURE CODE] )