Year Over Year Percentage Calculation not working

Hi motyagi,

Based on my test, we can get the values as you want the following steps.

1. Enter the data as you shared and create the measure as below:

VarianceLastYear = Calculate(SUM('Inventory Summary Data'[Total Production Variance]) ,SAMEPERIODLASTYEAR('Inventory Summary Data'[Period]))

VarianceLast2Year = TOTALYTD(SUM('Inventory Summary Data'[Total Production Variance]),DATEADD('Inventory Summary Data'[Period],-2,YEAR))

YoYVariance = var
P =SELECTEDVALUE('Inventory Summary Data'[Financial Year Identifier])
return
IF(P = "Current Period",[SumVariance]/[VarianceLastYear]-1)

YoYVariance2 = var
P =SELECTEDVALUE('Inventory Summary Data'[Financial Year Identifier])
return
IF(P = "Current Period",[SumVariance]/[VarianceLast2Year]-1)

2. Then we can get the result as below.

For more details, please check the pbix as attached.

https://www.dropbox.com/s/7n2b4u2sb7cd49m/Year%20Over%20Year%20Percentage%20Calculation%20not%20working2.pbix?dl=0

Regards,
Frank