Measure using different data within one column

Hi,

I currently have my data structured in the following manner:

I am having trouble calculating within one column. For example, in my column KPI i have:

Product 1 Revenue

Product 2 Revenue

I am trying to calculate the Revenue Mix: Product 1 Revenue/ (Product 1 Revenue+Product 2 Revenue). Is there any way to create a measure that calculates this?

I tried to use the If function for KPI, in order to filter out the value, however, since the same KPI appears more than once in the table it tells me that I need one unique value. However, there is no way i can Sum (or any calculation of the sort) a string.

Thank you,

Pamela