DAX Trend function.

[Anonymous]

Hi everyone.

I need help with a calculation with a Trend.

The excel formula that we use is mannualy changed each month, but we want to have it in Power Bi without of course de mannualy calculations.

Trend = Average( of the last 3 months)

Example, if we are in April the Trend should be the Average of the values from Jan, Feb and Mar, and if we are in May should be from Feb, Mar, Apr.

I have a Calendar table with the following structure.

Thank you in advance

[amitchandak]

@Anonymous , try a measure like given below with Date Table

Rolling 3 = divide( CALCULATE(sum(Sales[Sales]),DATESINPERIOD('Date'[Date ],eomonth(MAX('Date'[Date]),-1),-3,MONTH)) ,
CALCULATE(distinctCOUNT('Date'[Month Year]),DATESINPERIOD('Date'[Date],eomonth(MAX('Date'[Date]),-1),-3,MONTH), filter(Sales,not(isblank((Sales[Sales]))))))

Or

Rolling 3 = CALCULATE(Average(Sales[Sales Amount]),DATESINPERIOD('Date'[Date ],eomonth(MAX('Date'[Date ]),-1),-3,MONTH))