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Frequent Visitor

## Calculation within a Column

Hello,

I got another question

is it possible to calculate the difference within one column between two months?

E.g.

Month: January

Product launch: 5

Month: February

Product launch: 7

--> calculate in new column the difference between "Product launch" February and "Product launch" January:

7-5 = +2

Explanation

Maybe anybody know a solution.

Julia

3 ACCEPTED SOLUTIONS

Accepted Solutions
Super User III

## Re: Calculation within a Column

Try this solution.

If you donot have a column for Month Numbers... add this calculated column

```Month_Number =
SWITCH (
Table1[Months],
"January", 1,
"February", 2,
"March", 3,
"April", 4,
"May", 5,
"June", 6,
"July", 7,
"August", 8,
"September", 9,
"October", 10,
"November", 11,
"December", 12
)```

Now you can get the desired difference column using below

```Difference =
VAR PreviousMonthValue =
CALCULATE (
SUM ( Table1[Product Launch] ),
FILTER (
ALL ( Table1 ),
Table1[Month Number]
= EARLIER ( Table1[Month Number] ) - 1
&& Table1[Year] = EARLIER ( Table1[YEAR] )
)
)
VAR PreviousMonthValueforJan =
CALCULATE (
SUM ( Table1[Product Launch] ),
FILTER (
ALL ( Table1 ),
Table1[Month Number] = 12
&& Table1[Year]
= EARLIER ( Table1[YEAR] ) - 1
)
)
RETURN
Table1[Product Launch]
- IF ( Table1[Month_Number] = 1, PreviousMonthValueforJan, PreviousMonthValue )```

Try my new Power BI game Cross the River
Super User III

## Re: Calculation within a Column

@JuliaWendel

Try my new Power BI game Cross the River
Microsoft

## Re: Calculation within a Column

Hi @JuliaWendel,

Have you tried the solution provided by @Zubair_Muhammad above? Does it work in your scenario? If it works, could you accept it as solution to close this thread?

If you still have any question on this issue, feel free to post here.

Regards

4 REPLIES 4
Super User III

## Re: Calculation within a Column

Try this solution.

If you donot have a column for Month Numbers... add this calculated column

```Month_Number =
SWITCH (
Table1[Months],
"January", 1,
"February", 2,
"March", 3,
"April", 4,
"May", 5,
"June", 6,
"July", 7,
"August", 8,
"September", 9,
"October", 10,
"November", 11,
"December", 12
)```

Now you can get the desired difference column using below

```Difference =
VAR PreviousMonthValue =
CALCULATE (
SUM ( Table1[Product Launch] ),
FILTER (
ALL ( Table1 ),
Table1[Month Number]
= EARLIER ( Table1[Month Number] ) - 1
&& Table1[Year] = EARLIER ( Table1[YEAR] )
)
)
VAR PreviousMonthValueforJan =
CALCULATE (
SUM ( Table1[Product Launch] ),
FILTER (
ALL ( Table1 ),
Table1[Month Number] = 12
&& Table1[Year]
= EARLIER ( Table1[YEAR] ) - 1
)
)
RETURN
Table1[Product Launch]
- IF ( Table1[Month_Number] = 1, PreviousMonthValueforJan, PreviousMonthValue )```

Try my new Power BI game Cross the River
Super User III

## Re: Calculation within a Column

@JuliaWendel

Try my new Power BI game Cross the River
Microsoft

## Re: Calculation within a Column

Hi @JuliaWendel,

Have you tried the solution provided by @Zubair_Muhammad above? Does it work in your scenario? If it works, could you accept it as solution to close this thread?

If you still have any question on this issue, feel free to post here.

Regards

Frequent Visitor

Thank you 🙂

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