Solved: How to save percentage as a variable in DAX - Page 2

GoingIncognito · ‎01-23-2020

Hi.

My question is simple: How do I save a percentage as a variable in DAX? In order to count Sharpe's ratio I'd need to perform a following calculation:
Profit - (-0,25%) / volatility. How do I save the -0,25% as a variable? Only way I figured was to make a measure containing -0,25 and then change the data type to percentage.

Thank you!

EricHulshof · ‎01-24-2020

I think you need to understand a bit more about how percentages are saved, so here we go.
When a percentage is saved in Power BI it is saved as a decimal number (0,75) = 75%. When you select the modeling as percentage power bi is very smart and knows you want to see 75%. So it does that for you.
When calculating tho you would (most of the cases) use 0.75. Because if i want to calculate 75% of 1000 i can do 1000*0.75=750.
hence he said you might want to do it *100. (0.75*100=75%)

So to get back to your initial question when you save a measure with -0.25 and make it a percentage. The percentage is -25%. Calulating with -0.25% would be -0.0025.

i hope this helps 🙂

Quality over Quantity

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How to save percentage as a variable in DAX

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