Wow% Calculation

[Anonymous]

Hi,

I wish to create a Wow% and want to create a line to represent it.

I have extracted last_day_of_the_week from date column using Power Query and used it my visual.

I tried using the below measure to create previous week data but its not working here:

Previous Week SQL =

VAR weekselection =

    MAX ( F_PIPEGEN[Last Day of Week].[Date] )

RETURN

 CALCULATE (

            [SQL Count],

            FILTER ( ALL ( F_PIPEGEN[Last Day of Week].[Date] ), F_PIPEGEN[Last Day of Week].[Date] = weekselection - 1 ))

SQL WoW% = DIVIDE([SQL Count]-[Previous Week SQL],[Previous Week SQL],0)

In case I use Fiscal Week ( 1,2,3 etc) instead of last_day_of_the_week the measures work fine but need a way to make it work with column : last_day_of_the_week

Kindly help here.

[amitchandak · Accepted solution]

@Anonymous , Create a separate week table with rank on week start/end date of or on week year

Have these new columns in Date Table, Week Rank is Important in Date/Week Table

Week Rank = RANKX(all('Date'),'Date'[Week Start date],,ASC,Dense)
OR
Week Rank = RANKX(all('Date'),'Date'[Year Week],,ASC,Dense) //YYYYWW format
WeekDay = weekday([Date],2)

These measures can help
This Week = CALCULATE(sum('Table'[Qty]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])))
Last Week = CALCULATE(sum('Table'[Qty]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])-1))

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-Last-Week/ba-p/1051123
https://www.youtube.com/watch?v=pnAesWxYgJ8