% of rows not calculating properly, row axis based on dimension

[olimilo]

I have a matrix below showing the Pass % and Fail % of tests according to their test type:

However, as the matrix shows, it isn't showing the correct % per row. For example, Chemical failure rate should be 1.32% (128/9668) but it seems to be computing against the total number of tests (0.50% = 128/25395). The test group is based on a dimension related (1:M) to the data table.

How can I make it so that the % rates are computing based on the total tests in their test group and not against the total number of rows?

[v-zhouwen-msft · Accepted solution]

Hi @vicky_ ,thanks for the quick reply, I'll add further.

Hi @olimilo ,

You can try the following expression.The Table data is shown below:

Use the following DAX expression to create measures

Tests = COUNTROWS('Data')

TestFailed = COUNTROWS(FILTER('Data','Data'[Ispass] = "false"))

Measure = DIVIDE([TestFailed],[Tests],0)

Final output

[vicky_]

It's hard to debug without any given data, or DAX.

How did you calculate your (%) value? 

If you've used measures, then you can usually just use DIVIDE([numerator measure], [denominator measure]).
or you can try use the visual calculations (if you've got a more up-to-date version of powerBI), which should handle the various filters you might have applier - https://learn.microsoft.com/en-us/power-bi/transform-model/desktop-visual-calculations-overview