How to get Competitor ROI ?

Hi All

I have below table work fine :-

Now i need to Compute the ROI = COMP_NP/COMP_REV

COMP_ROI = DIVIDE ( SUM ( 'COMP'[COMP_REV] ), SUM ( 'COMP'[COMP_REV] ) )

 

https://www.dropbox.com/s/qp5rb81butnyrn7/COMPETITOR_V010%20Plot%20latest%20competitor%20sales%20amount%20SOLUTION.pbix?dl=0

Above is my PBI file 

 

Paul