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## % growth over PY ignore blank

Hi

I have a formula for sales growth over PY

```% Sales Growth over PY =
DIVIDE (
SUM ( 'FactSales'[Sales] );
CALCULATE (
SUM ( 'FactSales'[Sales] );
SAMEPERIODLASTYEAR ( 'DimCalendar'[Dates] )
)
) -1```

My data only starts in April 2017.

The current formula has limitations related to that

For example if on date range slicer:

May 2018 selected  =                                                                  (-2.6%)

April and May 2018 selected =                                                   (-1.6%)

March (blank in 2017), April and May 2018 selected  =            +50,4%

How can I ignore values in the selected month if the PY month has no data?

1 ACCEPTED SOLUTION
Community Support

HI @Credo,

I'd like to suggest you add a condition to compare 'previous date' and minimum date, calculate result when minimum date is 'large or equal to' previous date.

```% Sales Growth over PY =
VAR currDate =
MAX ( 'DimCalendar'[Dates] )
VAR minDate =
FIRSTDATE ( ALLSELECTED ( 'DimCalendar'[Dates] ) )
RETURN
IF (
minDate
<= DATE ( YEAR ( currDate ) - 1; MONTH ( currDate ); DAY ( currDate ) );
DIVIDE (
SUM ( 'FactSales'[Sales] );
CALCULATE (
SUM ( 'FactSales'[Sales] );
SAMEPERIODLASTYEAR ( 'DimCalendar'[Dates] )
)
)
- 1
)```

Regards,

Xiaoxin Sheng

Community Support Team _ Xiaoxin
If this post helps, please consider accept as solution to help other members find it more quickly.
Community Support

HI @Credo,

I'd like to suggest you add a condition to compare 'previous date' and minimum date, calculate result when minimum date is 'large or equal to' previous date.

```% Sales Growth over PY =
VAR currDate =
MAX ( 'DimCalendar'[Dates] )
VAR minDate =
FIRSTDATE ( ALLSELECTED ( 'DimCalendar'[Dates] ) )
RETURN
IF (
minDate
<= DATE ( YEAR ( currDate ) - 1; MONTH ( currDate ); DAY ( currDate ) );
DIVIDE (
SUM ( 'FactSales'[Sales] );
CALCULATE (
SUM ( 'FactSales'[Sales] );
SAMEPERIODLASTYEAR ( 'DimCalendar'[Dates] )
)
)
- 1
)```

Regards,

Xiaoxin Sheng

Community Support Team _ Xiaoxin
If this post helps, please consider accept as solution to help other members find it more quickly.

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