DAX Countif equivalent without explicit compare

[Anonymous]

I've seen a number of "DAX Countif" Q&A, but they all seem to have an explicit comparison, which I don't want.  Here's my scenario:

Customer   Option     OptionChoice

ABC        Flavor     Banana

ABC        Color      Blue

DEF        Flavor     Banana

DEF        Color      Red

JKL        Flavor     Vanilla

XYZ        Flavor     Chocolate

XYZ        Color      Blue

Ultimately I want to write a Measure (%OptionChoice) which allows me to calculate the Percentage of each OptionChoice per Option.  For instance it would look like this in a Table visual:

Option    OptionChoice   %OptionChoice

Flavor    Banana              50%

Flavor    Vanilla             25%       

Flavor    Chocolate           25%

Color     Blue                66%

Color     Red                 33%

This doesn't seem too hard, but I've tried so many variations of CALCULATE, DISTINCTCOUNT, FILTER, COUNTROWS, ALL and can't get it.  As someone who knows Excel formulas and SQL like the back of my hand, I find DAX so frustrating!

[parry2k · Accepted solution]

Try following 3 measures (I break it down for easy reading)

Number of Options = COUNT(Options[Option])

Total Options = CALCULATE(COUNT(Options[Option]), ALLSELECTED(Options[OptionChoice]))


% Choice = DIVIDE([Number of Options], [Total Options],0)

[Anonymous]

This is perfect, thanks so much @parry2k!