topic Re: Adding in a calculated column - percentage in DAX Commands and Tips

Adding in a calculated column - percentage

Meme123 — Thu, 02 Feb 2023 03:30:42 GMT

Hello,

I'm fairly new to PowerBi and struggling with adding in calculated columns. I need to add a column (in the value field in this matrix table) that claculates the percentage of '#classes changes' against '#all classes'. So the first row should equal 2.36% (462 classes changed out of a total of 19521 classes is 2.36%)

Any help appreciated!

Re: Adding in a calculated column - percentage

wdx223_Daniel — Thu, 02 Feb 2023 03:41:33 GMT

Percentage%=DIVIDE([# Classes Canged],[# ALL classes],0)

Re: Adding in a calculated column - percentage

Meme123 — Thu, 02 Feb 2023 03:48:11 GMT

I should have noted that '#Classes changed' and '#All classes' are from two different tables.

Re: Adding in a calculated column - percentage

Meme123 — Thu, 02 Feb 2023 03:50:33 GMT

Sorry, I should have noted that '#Classes changed' and '#All classes' are from two different tables.

Re: Adding in a calculated column - percentage

TomasAndersson — Thu, 02 Feb 2023 05:08:23 GMT

Hi!
If # Classes Changed and # All Classes are from different tables you can use LOOKUPVALUE() first.

You need some sort of common key for each class in your tables (called ClassKey below, change accordingly). This also assumes that you create the columns in your table with the All Classes (ACTable) value and not the table with Classes Changed (CC Table). You can do it the other way around, but need to switch up the DAX then.

Then a calculated column should be able to look something like this:

% changed = VAR __CurrentClass = ACTable[ClassKey] VAR __ClassesChanged = LOOKUPVALUE(CCTable['# Classes Changed'],CCTable[ClassKey], __CurrentClass) VAR _ return DIVIDE( __ClassesChanged, ACTable['# All Classes'])

Good luck!

Re: Adding in a calculated column - percentage

TomasAndersson — Thu, 02 Feb 2023 05:10:49 GMT

Another easy way, if you don't need it to be a calculated column and are ok with a measure (that can be shown as a column in a matrix) could just be to calculate the sum for each and then divide them:

Percentage := DIVIDE( SUM([# Classes Changed]), SUM([# All Classes]) )

It might depend on how your data is structured, but a possiblity.

Re: Adding in a calculated column - percentage

Samarth_18 — Thu, 02 Feb 2023 05:35:53 GMT

Hi Meme123 ,

You could create a measure as below and format it as percentage:-

Percentage_classes = DIVIDE(sum('table1'[# Classes Changed]),Sum('table2'[# ALL classes]),0)