Compare Jan 20 with Jan 21 data and work out Percentage Difference

[Anonymous]

Hi Experts

I want a new measure which i cannot work out on how to calculate the

Percentage Difference

Jan 2020 (441) - Jan 2021 (685) week on week comparison

and so on for all the months - the sample PBIX file show a measure for month over month difference. Kinldy ignore that i managed to do that.

See sample PBIX file.

https://www.dropbox.com/s/g50upe7c0uxozlb/Mtnovermtn.pbix?dl=0 

[amitchandak · Accepted solution]

@Anonymous , Try like

total sales same week# previous month = 
var _max = Max(DimDate[Date])
var _date = date(year(_max), month(_max)-12, Day(_max))
VAR currentyear = Year(_date)
VAR currentmonth = Month(_date)
VAR currentweeknumber = MAX(DimDate[weekinmonth])
RETURN
CALCULATE([total sales], FILTER( ALL(DimDate), DimDate[Year] = currentyear && DimDate[MonthNo] = currentmonth  && DimDate[weekinmonth] = currentweeknumber))

Also be careful on sort order, as you might not have prior data for 1 year. I got confused and done some reordeing

[Anonymous]

Thank you sir