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Week on Week Variance by Number and Percentage

Hi How do I calculate the Variance as a percentage and number wise Week on Week and Show the result in the format below? 


This is a Matrix Visual  using Country as Rows, Fiscal Weeks as Columns for a total volume of Items as the values

The result I am after is 

Canada -501 for between weeks 3 & 4 

Canada -23.44% for between week 3  & 4 etc, etc.


An help on how to caculate this as a measure or extra column will be greatly appreciated. 




Super User
Super User

what should happen in week 1?


Please provide sample data that covers your issue or question completely, in a usable format (not as a screenshot).
Please show the expected outcome based on the sample data you provided.



I can't go back to week 1 because this is a data feed that only goes back a certain period. 


However, visual is a Matrix and the Visuals with the variance in that I and trying to create are also Matrix visual but with Variance between the weeks by Num or by % changes up or down re the example in the orginal request. 


Kind Regards

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