How to set weekly range and weekly variation (M or DAX)

[fitapbi]

Hi! I have this table for subscriptions to our service:

Id Subscriber	Subscription date
210651	30/04/2013
210651	30/04/2013
210651	30/04/2020
224376	27/01/2020
224379	07/05/2020
224377	16/07/2020
224382	23/02/2020
224380	29/05/2020
224381	01/12/2021
214031	24/11/2021
214048	16/11/2021
214032	08/03/2021
214030	12/08/2021

We are not able to create this output:

Week range	Subscription 2021 (A)	Weekly variation 2021	Subscription 2022 (B)	Weekly variation 2022	2021 vs 2021 (B-A)/A
1-jan-8-jan	3.280		8.387
9-jan-15-jan	4.061	23,81%	9.881	17,81%	143,31%
16-jan-22-jan	6.916	70,30%	11.884	20,27%	71,83%
23-jan-29-jan	8.460	22,33%	13.174	10,85%	55,72%
30-jan-5-feb	9.798	15,82%	13.894	5,47%	41,80%
6-feb-12-feb	10.687	9,07%	14.749	6,15%	38,01%
13-feb-19-feb	11.331	6,03%	15.475	4,92%	36,57%
20-feb-26-feb	11.661	2,91%	16.039	3,64%	37,54%
26-feb-5-mar	11.963	2,59%	16.564	3,27%	38,46%
6-mar-12-mar	12.246	2,37%	17.063	3,01%	39,34%
13-mar-19-mar	12.493	2,02%	17.504	2,58%	40,11%
20-mar-26-mar	13.013	4,16%	17.837	1,90%	37,07%

I appreciate solutions both in Query editor (creating a new table) or in DAX

Thank you

[v-jianboli-msft]

Hi @fitapbi ,

Could you tell me if your problem has been solved? If it is, kindly Accept it as the solution. More people will benefit from it. Or if you are still confused about it, please provide me with more details about your table and your problem(Such as how to calculate the weekly variation and where does the ssubscription come from) or share me with your pbix file after removing sensitive data.

Refer to:

How to provide sample data in the Power BI Forum

How to Get Your Question Answered Quickly

Best Regards,

Jianbo Li

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[amitchandak]

@fitapbi , Create a calendar like below, Join with your table , mark as date table

Date= 
Var _cal = Addcolumns(calendar(date(2020,01,01), date(2021,12,31) ), "Month no" , month([date]) 
, "Year", year([date])
, "Month Year", format([date],"mmm-yyyy") 
, "Month year sort", year([date])*100 + month([date])
, "Qtr Year", format([date],"yyyy-\QQ") 
, "Qtr", quarter([date]) 
, "Month",FORMAT([Date],"mmmm")
, "Month sort", month([DAte])
, "Week No" , if([Date]> Date(Year([Date]),1,1) ,  Quotient(datediff(Date(Year([Date]),1,2) , [Date], day) ,7)+1 ,1)
, "Year Week" ,Year([Date])*100 + if([Date]> Date(Year([Date]),1,1) ,  Quotient(datediff(Date(Year([Date]),1,2) , [Date], day) ,7)+1 ,1)
			
)
return 
addcolumns(_cal ,
"Week Rank" , rankx(_cal, [Year week],,asc,dense) ,
"Week Name" , format(minx(filter(_cal,[Year Week] =earlier([Year Week])),[Date]), "dd-Mmm") &" - "& format(maxx(filter(_cal,[Year Week] =earlier([Year Week])),[Date]), "dd-Mmm")
)

Then create measure like

example

This Week = CALCULATE(count(Table[Id Subscriber]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])))
Last Week = CALCULATE(count(Table[Id Subscriber]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])-1))

diff = [This Week] - [Last week]

diff % =divide( [This Week] - [Last week],[Last week])

Use matrix visual with week name in row, year in column , count measure and diff% measure in values

Time Intelligence, DATESMTD, DATESQTD, DATESYTD, Week On Week, Week Till Date, Custom Period on Period,
Custom Period till date: https://youtu.be/aU2aKbnHuWs&t=145s

Power BI — Week on Week and WTD
https://medium.com/@amitchandak.1978/power-bi-wtd-questions-time-intelligence-4-5-98c30fab69d3
https://community.powerbi.com/t5/Community-Blog/Week-Is-Not-So-Weak-WTD-Last-WTD-and-This-Week-vs-La...
https://www.youtube.com/watch?v=pnAesWxYgJ8