Measure to compute changes within same table

[Anonymous]

Hi All,

Would like to seek for some help here. 

I have a series of weekly file with information similar to below table:

Unique Key	Week number	Quarterly Forecast
A01	1	84
A02	1	54
B01	1	135
C01	1	251
A01	2	107
B01	2	326
B02	2	181
C02	2	393
A01	3	247
A02	3	385
B01	3	395
C02	3	113

Can I create a measure to compute the difference of the same Primary (current week vs last week)?

For example, during week 4, what shown under Unique Key A01 will be the change from week 3 to week 4.

Appreciate your help here.

[Ashish_Mathur]

Hi,

Your question is not clear.  Show the expected result.

[Anonymous]

Hi Ahish,

Thanks for replying. What I expected is:

Data Table (consists of series of weekly data)

Primary Key	Week	Value
A01	1	120
A01	2	170
A01	3	70
A01	4	100
A02	1	70
A02	2	100
A02	3	170
A02	4	130

Outcome:

Primary Key	Week 2	Week 3	Week 4
A01	50	-100	30
A02	30	70	-40

Week 2 = Difference in vallue for A01/A02 between Week 2 and Week 1 (Previous Week)

Week 3 = Difference in vallue for A01/A02 between Week 3 and Week 2 (Previous Week)

So I can plot either column chart or line chart to visualize the changes every week.

Thanks for your help.

[Ashish_Mathur · Accepted solution]

Hi,

You may download my PBI file from here.

Hope this helps.

[Anonymous]

Thanks Ashish! It defintely helps here!

The only change I made is the week formula:

Previous formula makes it repeating from 1 to 4.

Week = QUOTIENT(

DATEDIFF(DATE(YEAR('Calendar Date'[Date]),1,1),'Calendar Date'[Date], DAY) +1

,7)

Thanks for your assistance here!

[Ashish_Mathur]

You are welcome.