Calculate % chg for Prior Period

[trishd1223]

Hi - I need to calculate % change for prior period.  I was able to do that for % chg vs Prior year, because I have two different columns - $ Sales and $ Sales Year Ago.  However, I don't have the $ Sales Prior Period column.  I have 12 different monthly periods and a $ Sales column.  So for example, I'd like to know the % Change in $ Sales from the 4 week ending 1/28/23 vs 12/31/22.  Any ideas how I would do this?  Thanks! 

   

[v-cgao-msft]

Hi @trishd1223 ,

Please try this measure.

Measure = 
VAR _cur_period = MAX('Table2'[Period])
VAR _pre_period = CALCULATE(MAX('Table2'[Period]),'Table2'[Period]<_cur_period)
VAR _before_pre_period = CALCULATE(MAX('Table2'[Period]),'Table2'[Period]<_pre_period)
VAR _sale1 = CALCULATE(SUM('Table1'[Sales]),'Table1'[Date] > _before_pre_period && 'Table1'[Date] <= _pre_period)
VAR _sale2 = CALCULATE(SUM('Table1'[Sales]),'Table1'[Date] > _pre_period && 'Table1'[Date] <= _cur_period)
VAR _result = DIVIDE(_sale2-_sale1,_sale1)
RETURN
_result

Comparing different time periods – DAX Patterns

Week-related calculations – DAX Patterns

Best Regards,
Gao
Community Support Team

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