Last 12 months vs 12 Months prior sales Comparison

[Anonymous]

Hi All,

I have my sales data from 2016 (more than 36 Months). I would like to compare my sales Rev of last 12 months vs 12 months prior to last 12 months, i.e  last 24 months. I have a date filed as purchase date. I am trying to create a measure. Could you please help me here. Thanks.

[Anonymous]

so 
18 Sept 2018 to 17 Sept 2019
compared to
18 Sept 2017 to 17 Sept 2018
?

[Anonymous]

@Anonymous Yes. Correct. Like this i am comparing Apples to Apples, Last 12 months Vs 12 months prior.Thanks.

[amitchandak]

Try

last 12 month Sales = 
Var _endDate= Maxx(ALLSELECTED('Date'[Date Filer]),ENDOFMONTH('Date'[Date Filer]))
Var   _start_date= minx(ALLSELECTED('Date'[Date Filer]),DATEADD(STARTOFMONTH('Date'[Date Filer]),-12,MONTH))


return
calculate(sum(Sales[Sales Amount]),Sales[Sales Date] >= _start_date && Sales[Sales Date] <= _endDate)


last to last 12 Sales = 
Var _endDate= Maxx(ALLSELECTED('Date'[Date Filer]),DATEADD(STARTOFMONTH('Date'[Date Filer]),-13,MONTH))
Var   _start_date= minx(ALLSELECTED('Date'[Date Filer]),DATEADD(STARTOFMONTH('Date'[Date Filer]),-24,MONTH))


return
calculate(sum(Sales[Sales Amount]),Sales[Sales Date] >= _start_date && Sales[Sales Date] <= _endDate)
 

[Anonymous]

https://www.sqlbi.com/articles/compare-equivalent-periods-in-dax/