Google Analytics ATOP in Power BI

Hello!

I'm working on a dashboard configuration pulling in Google Analytics data and am having trouble with my measure for ATOP and it pulling in the right numbers. Below is the measure that I used and attached is the screenshot which shows the ATOP metric not pulling in correctly. Has anybody run into something similar?

ATOP = format([Total Time on Page]/[Total Visits]-[Total Exits],"HH:MM:SS")