Percentage of Subtotal in Matrix visualizations

[xliu1]

I need to make a matrix visualizations that show the percentage of subtotal as below

Rows: Course_Level (undergraduate vs. graduate)

          Course_Site (On Campus, High Flex, Off Campus)

Columns: College

Values: % of subtotal (for example: 82% of undergraduate course sections are on campus)

I created a new variable using the formula: 

ModalityPerc = DIVIDE(SUM(Aggr_Headcount[Section_Count]), CALCULATE(SUM(Aggr_Headcount[Section_Count]), Aggr_Headcount[Course_LEVEL]))

But when I placed the variable "ModalityPerc" for values, I got this error  

Any idea on how I should modify the formula to make it work? Thanks.

[mattww]

The reason you're getting this error is because of the part highlighted in red below. The second part of a CALCULATE should be some kind of filter which would return a true/false, for example Aggr_Headcount[Course_LEVEL] > 10

ModalityPerc = DIVIDE(SUM(Aggr_Headcount[Section_Count]), CALCULATE(SUM(Aggr_Headcount[Section_Count]), Aggr_Headcount[Course_LEVEL]))

If this post helps then please consider Accept it as the solution to help the other members find it more quickly.

[xliu1]

Thanks for your response. Course_Level only includes two values "undergraduate" and "graduate".

I try to make the formula dynamic, so it will calculate the % of subtotal for each category of course level

[mattww]

Try this

Section_Total =
CALCULATE (
SUM ( Aggr_Headcount[Section_Count] ),
ALLEXCEPT ( Aggr_Headcount, Aggr_Headcount[Course_LEVEL] )
)

This would give you the bottom number of your divide

If this post helps then please consider Accept it as the solution to help the other members find it more quickly.

Matt

[xliu1]

Thank you. I tried your formula, but it returns the same value as shown below?

[mattww · Accepted solution]

Ah ok, you would need to add the school into the ALLEXCEPT too 

Section_Total =
CALCULATE (
SUM ( Aggr_Headcount[Section_Count] ),
ALLEXCEPT ( Aggr_Headcount, Aggr_Headcount[Course_LEVEL],Aggr_Headcount[School]  )
)

So anything you want the measure to continue to be filtered by, such as the level or school goes in the second part of that except.  

You could then use that in your % calc

ModalityPerc =
DIVIDE ( SUM ( Aggr_Headcount[Section_Count] ), [Section_Total] )