Welcome to the forum
see the attached
I didn't get into the math bu mad 2 changes to the formulas
the first is to account for nulls in the data using zn() and the second was to aggregate the measures with sum() - you will want to check to see that is correct in the analysis
it returns this
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forums_calc_example.twbx 584.1 KB
Thank you so much, Jim! I have used ZN before and I'm not sure why it didn't occur to me that the calculation would return blank without it! That worked beautifully. Also, I did have the metrics switched in the calculation. When I switched the order of them it calculates correctly.
I appreciate your assistance!
Glad to help out