Dax comparing current week to lastweek

[Anonymous]

Hi,

I want to find out the Reorder rate Measure in the following table.

The Logic Reorder rate Measure is as follows,

for week no 2: Re Ordered Outlets in week 2 / No of Unique Outlets in previous week i.e week 1, (600/1110) *100 = 55%

for week no 3: Re Ordered Outlets in week 3 / No of Unique Outlets in previous week i.e week 2, (1280/1700) *100 = 76%

for week no 4: Re Ordered Outlets in week 4 / No of Unique Outlets in previous week i.e week 3, (1610/1950) *100 = 83%

for week no 5: Re Ordered Outlets in week 5 / No of Unique Outlets in previous week i.e week 4, (2010/2800) *100 = 72%

Thanks

[amitchandak]

@Anonymous , You can work like

This Week = CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week ]=max('Date'[Week ])))
Last Week = CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week ]=max('Date'[Week ])-1))

But prefer week rank, else it will not work across year

Week Start date = 'Date'[Date]+-1*WEEKDAY('Date'[Date],2)+1 //Monday Week

or

Week Start date = 'Date'[Date]+-1*WEEKDAY('Date'[Date],1)+1 //Sunday Week

Week Rank = RANKX(all('Date'),'Date'[Week Start date],,ASC,Dense)

This Week = CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])))
Last Week = CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])-1))

refer

https://community.powerbi.com/t5/Community-Blog/Week-Is-Not-So-Weak-WTD-Last-WTD-and-This-Week-vs-Last-Week/ba-p/1051123

https://www.youtube.com/watch?v=7Jc3D4iaTqs

[Anonymous]

Hi @amitchandak 

The below last week formulae working fine on normal sum but when use this formulae over cumulative sum it not working.

Last Week = CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week ]=max('Date'[Week ])-1))

Thank you.

[amitchandak]

Cumulative till last week

Cumm Last Week = CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week ]<=max('Date'[Week ])-1))

[AlB]

Hi @Anonymous 

You can create a calculated column in the table you show:

Reorder Rate =
VAR previousweek_ = Table1[week No] - 1
VAR uniqueOutletsPreviousWeek_ =
    CALCULATE (
        DISTINCT ( Table1[No of Unique Outlets] ),
        Table1[Week No] = previousweek_,
        ALL ( Table1 )
    )
RETURN
    100 * DIVIDE ( Table1[Re Ordered Outlets], uniqueOutletsPreviousWeek_ )

Please mark the question solved when done and consider giving kudos if posts are helpful.

 Cheers 

[MFelix]

Hi @Anonymous ,

You need to use a measure similar to this one:

Reorder Date =
Var week_selected = SELECTEDVALUE (Table[Week])
Return
DIVIDE(SUM(Table[UniqueOutletes]); CALCULATE(SUM(Table[Re Orderred Outlets); FILTER(ALL(Table[Week]);Table[Week] = week_selected -1))

You may need to change the sum to a count or distintct count depending on your model settinsgs