Calculating percentage of total population using many to one relationships

[lerodriguez]

Hello PowerBI Community! 

This is a layered questions and please bear with me on the steps. The Goal is to get to a measure that allows me to multiply the result of other measures which are based on data from two separate tables at different granularities. I have try to explained below what i have done visually. I have managed to calculate correctly Measure 1 and 2. However, when I multiply the two measures i get a number that is not even close to what it should be. I know there are alot of steps on this graph so happy to explain further if need be. thank you all in advace! 

[TeigeGao]

HI @lerodriguez ,

Could you please share the expected result to us for analysis? Which visual do you want to show the measure, it looks like that measure should remove the filter of category, then you can use all([category]), besides, how will you calculate the measure 2, the sum of value table a? Besides, please share the pbix or the csv to us.

Best Regards,

Teige