Conditional formatting issue with matrix visual

I have a report with a matrix visual like below where I'm showing scores for survey results. Each of the three columns in my matrix is a measure and I'm trying to add conditional formatting to the Delta column. 

My conditional formatting is set up using a Field Value based on the measure [Color_Formatting]. The 25th percentile is -8.40, so anything below that should be formatted in red.

The issue is shown in the table visual on the left which has the Score Category (Process, Skills) and the Score Subcategory in the Rows pane. On this visual the conditional formatting is incorrect. 

In the table visual on the right I removed the Score Category (Process, Skills) from the Rows Pane leaving only the Score Subcategory. In this visual, the conditional formatting is correct.

So the question is how I can correctly show the conditional formatting in the table on the left where I have Score Category (Process, Skills) and the Score Subcategory in the Rows pane.

Color_Formatting = IF(Delta <= [25Percentile], "Red","Black")

25Percentile = PERCENTILEX.INC(ALL('Table'[Scorecard_Subcategory]), 'Table'[Delta],.25)

Score for Opportunities Closed = 
CALCULATE(
DIVIDE(SUM(Table[Scores]),COUNT(Table[Opportunity_ID])),
KEEPFILTERS(TABLE[Closed_Flag = 1))

Score for Opportunities Not Closed = 
CALCULATE(
DIVIDE(SUM(Table[Scores]),COUNT(Table[Opportunity_ID])),
KEEPFILTERS(TABLE[Closed_Flag = 0))

Delta = [Score for Opportunities Not Closed] - [Score for Opportunities Closed]