Help with MoM% change using date filter

[cwnoll]

I have a date filter on my dashboard, that is currently set at 1/1/2019(start) and 1/27/2020(end). I have a matrix with Mth-Yr in columns and data in each column. I am trying to calculate the % change in Jan 2020 to Dec 2020, but the problem is, there are only 27 days in the current month of Jan 2020. So what is the best way, or is there a way, to calculate MoM% change, given the date filter, to compare Jan 1-27 2020 to Dec 1-27 2019, instead of Dec 1-31 2019?

Thank you in advance

[cwnoll · Accepted solution]

Thanks all for the quick responses, but I found a solution that works. I am using the following measure to accomplish this.

Trans MoM Var =

VAR __PREV_MONTH =

CALCULATE([Transport MTD],DATEADD(FILTER(DATESMTD('Calendar'[Date]),'Calendar'[Date]<TODAY()),-1,MONTH))

RETURN

    DIVIDE(SUM('TD'[Transport]) - __PREV_MONTH, __PREV_MONTH)

[mwegener]

Hi @cwnoll,

does it really matter?

I mean do you also consider working days?

Or how do you compare February 2019 (28 Days) to March 2019 (31 Days)?

Perhaps you could consider the percentage progress of the month. (27/31 = 87%)

Regards,

Marcus

Dortmund - Germany
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[amitchandak]

Create a date calendar and following calculations should help, check for complete last month

MTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESMTD('Date'[Date]))
last MTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(dateadd('Date'[Date],-1,MONTH)))
last MTD (complete) Sales =  CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFMONTH(dateadd('Date'[Date],-1,MONTH))))
last year MTD (complete) Sales =  CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFMONTH(dateadd('Date'[Date],-12,MONTH))))

MTD (Year End) Sales =  CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFYEAR('Date'[Date])))
MTD (Last Year End) Sales =  CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFYEAR(dateadd('Date'[Date],-12,MONTH))))

To get the best of the time intelligence function. Make sure you have a date calendar and it has been marked as the date in model view. Also, join it with the date column of your fact/s.

Refer
https://radacad.com/creating-calendar-table-in-power-bi-using-dax-functions
https://www.archerpoint.com/blog/Posts/creating-date-table-power-bi

https://www.sqlbi.com/articles/creating-a-simple-date-table-in-dax/

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