@akapoor03 , Are you looking for WTD. Not very clear with you example

WTD = CALCULATE(sum(‘Table'[Qty]), FILTER(ALL(‘Date’),’Date'[Week Rank]=max(‘Date'[Week Rank]) && ‘Date'[WeekDay]<=max(‘Date'[WeekDay])))
LWTD = CALCULATE(sum(‘Table'[Qty]), FILTER(ALL(‘Date’),’Date'[Week Rank]=max(‘Date'[Week Rank])-1 && ‘Date'[WeekDay]<=max(‘Date'[WeekDay]) ))

 

 

where week rank is column

 

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

 

 

The information you have provided is not making the problem clear to me. Can you please explain with an example.

Appreciate your Kudos.