MoM sales variation

[juanlopezmeyer]

Hello,

I need to prepare a cascade graph with the MoM Sales variation by year. 

I have traied with --> Previous month = CALCULATE(SUM('GA Ecommerce'[Sales]),PREVIOUSMONTH('GA Ecommerce'[Date]))

The problem is that i can not differenciate betwwen the years since sales in JAN (n+1) yhe sales are being compared with December (n).

Thanks!