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Frequent Visitor

## Variance compared to sum of previous date

Hello all,

Would really appreciate your help.. I have a complex table - but see simplified issue here:

 Date Quantity 15/05/2021 5 15/05/2021 4 15/05/2021 1 15/05/2021 1 15/05/2021 1 15/05/2021 1 15/05/2021 5 15/05/2021 55 15/05/2021 5 16/06/2021 22 16/06/2021 1 16/06/2021 1 16/06/2021 1 16/06/2021 1 30/07/2021 45 30/07/2021 1 30/07/2021 1 30/07/2021 1 30/07/2021 55 30/07/2021 50 30/07/2021 1 30/07/2021 1

I would like to see a % variance (in a matrix) - which would be as below:

 May Jun Jul 78 26 155 -67% 496%

I would un-select the Month of May - as this month has nothing to compare with.

June is (26-78)/78= -67%

July is (155-26)/26 = +496%

I have researched everywhere & tried countless Dax - nothing seems to work. Thank you in advance.

1 ACCEPTED SOLUTION
Super User

Hi,

Hope this helps.

Regards,
Ashish Mathur
http://www.ashishmathur.com
7 REPLIES 7
Super User

Hi,

Hope this helps.

Regards,
Ashish Mathur
http://www.ashishmathur.com
Frequent Visitor

Thank you Ashish. This worked wonderfully!

Super User

You are welcome.

Regards,
Ashish Mathur
http://www.ashishmathur.com
Community Support

Hi, @Jay_Mitchel ;

You could create a column to show month by date; then create a measure as follows:

a)create a column

``Mon = FORMAT([Date ],"mmm")``

b)create a measure

``````variance =
VAR _value =
CALCULATE (
SUM ( [Quantity] ),
FILTER ( ALL ( 'Table' ), MONTH ( [Date ] ) = MONTH ( MAX ( [Date ] ) ) - 1 ))
RETURN
IF (
ISINSCOPE ( [Month] ),
SUM ( [Quantity] ),
FORMAT ( DIVIDE ( SUM ( [Quantity] ) - _value, _value ), "0%" ))
``````

c)change the subtotals label:

The final output is shown below:

Best Regards,
Community Support Team_ Yalan Wu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Frequent Visitor

Hello,

Still some kinks to work out, but your method appears perfect.

Just one question, what is the empty Month column & why do you reference it in your Dax?

Community Support

Hi, @Jay_Mitchel ;

Because my dax needs to be based on a column(ISINSCOPE() need), but there is no suitable column in your example, so I created an empty column, if there are other columns, it is fine. Just here for the sake of beauty I created an empty column.
Best Regards,
Community Support Team_ Yalan Wu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Frequent Visitor

Thank you for the help. 🙂

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