% of Total from Ratio/division measure

[Glaeran]

Hey there.

I have following data structure:

Measures A and B are comming from data source as simple Sum([Col_A]) or Sum([Col_B]).

A/B is created by DIVIDE([A],[B]).

What I'm trying to achieve is get % of Total based on [A/B]. I tried to reapply similar formula that I'm using for [% of Total A] :  DIVIDE([A], CALCULATE([A],ALLSELECTED(Table))). But naturally it's not working properly as DAX divides everything by "15,0" instead of "152,2" (sum of individual values in A/B column).

How to properly write DAX formula for that scenario?

[v-lili6-msft]

HI, @Glaeran 

This looks like a measure totals problem. Very common. See this post about it
https://community.powerbi.com/t5/DAX-Commands-and-Tips/Dealing-with-Measure-Totals/td-p/63376

Also, this Quick Measure, Measure Totals, The Final Word should get you what you need:
https://community.powerbi.com/t5/Quick-Measures-Gallery/Measure-Totals-The-Final-Word/m-p/547907

For your case, add new measure based on [A/B]

Measure = VAR _TABLE=SUMMARIZE('Table','Table'[Type],"_A/B",[A/B]) RETURN
SUMX(_TABLE,[_A/B])

Result:

Best Regards,

Lin

[Glaeran]

@v-lili6-msft  thank you. This is almost what I'm looking for.

My main issue now is that this measure shouldn't be dependant on "Type" as this can get changed by the end-users dynamically [measure is supposed to land in SSAS cube]. Any ideas here?

[saykasku]

You can't create measure on SSAS from PBI. It's not supported.
You can import pbix as new tabular model. It's all. 

[Glaeran]

@saykasku  I don't want to create measure in PowerBI.

Entire calculation will be placed in SSAS which will be connected to PBI/Excel/Other tools. And user will have a chance on which level he wants to see the data. Therefore I believe that hardcoding reference column won't work in my scenario as this can change easily and wrong values will be displayed.

[saykasku]

In this case u are dividing by 1 381 882 099,6.

If u want to divide by 155,2 u need to:

a/b =

CALCULATE(

SUMX(

ALL(DDIM_DATE[MONTH_NR_IN_YEAR]);

DIVIDE([A];[B])

);

FILTER(DDIM_DATE; DDIM_DATE[YEAR_NR] = max(DDIM_DATE[YEAR_NR]))

)

and its done.