Home Forums Power Pivot Calculated sales based on same date last year

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This topic contains 1 reply, has 2 voices, and was last updated by  tomallan 3 years, 2 months ago.

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    Hi I have imported my sales into power-pivot and need to calculate a 10% sales increase based on the same day of the week.

    First question is: can I have a column calculate based on the date-364 days so it equals the same day of the week. I can take the sales and x by 10% but I need the same weekday.

    Next part is harder. So I have monthly sales last February of 100,000, the stores goal is 100,000 x10%= $110,000 for the month. But I need to use the 1st of February last year which is a Wednesday and this year is a Thursday. So the same weekdays last year might total 95,000, so i need to take the same 28 days and x by 1.151 to = $110,000.

    I was thinking of using a calculated column. But not sure what to do.





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    With the intent of keeping the target of 110% over the prior year, I would take a less complicated approach.

    Thinking out loud for a minute, a person can create a measure with the SWITCH function that would execute a different slightly different formula depending on whether date, week, month, etc., is filtered in a cell of a pivot. For example, if a pivot cell is filtered on date, contrast sales with 110% of 364 days ago (to compare with the same day of week); but if the pivot cell is filtered on week, contrast with 110% of the sales between the week-start-date 364 days ago and the week-ending-date 364 days ago; but for all other calendar periods (which should be multiples of months), contrast with 110% of the same period last year.

    If you could put up some sample data in a workbook, we could see if we could hammer out the formula described in the paragraph above.

    From a previous post it looks like you are using Excel 2016, please advise if otherwise.


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