measures to find difference between current vs previous month

[Anonymous]

Hi,

To calc the variance between current vs previous month amounts, I use this formula:

    AdsPromo Var = if([AdsPromo LM] = BLANK(), 0, 
          [AdsPromo]-[AdsPromo LM])

For Feb17, the AdsPromo Var amount is still 0 using the above formula when it should be 464 (464-0). Kindly advise on how resolve the error in the measure/DAX.

Tks: -Nik

[nandukrishnavs · Accepted solution]

Hi @Anonymous ,

Assuming that your source table is similar to below -

Source

If you are looking for a measure, use below DAX query - 

AdsPromo Var =
VAR current_Month =
    CALCULATE ( SUM ( 'Table'[AdsPromo] ) )
VAR previous_Month =
    CALCULATE ( SUM ( 'Table'[AdsPromo] ), PREVIOUSMONTH ( 'Table'[Month-S] ) )
VAR AdsPromoVariance = current_Month - previous_Month
RETURN
    AdsPromoVariance

The Month-S column should be the date type. 

Here is the output

Output

Regards,

Nandu Krishna

[nandukrishnavs · Accepted solution]

Hi @Anonymous ,

Assuming that your source table is similar to below -

Source

If you are looking for a measure, use below DAX query - 

AdsPromo Var =
VAR current_Month =
    CALCULATE ( SUM ( 'Table'[AdsPromo] ) )
VAR previous_Month =
    CALCULATE ( SUM ( 'Table'[AdsPromo] ), PREVIOUSMONTH ( 'Table'[Month-S] ) )
VAR AdsPromoVariance = current_Month - previous_Month
RETURN
    AdsPromoVariance

The Month-S column should be the date type. 

Here is the output

Output

Regards,

Nandu Krishna

[Anonymous · Accepted solution]

Thanks, @nandukrishnavs .

All is good. 

In fact, I have also managed to create the variance percentage subsequently.

KRgds: -Nik