Hi Ganapathy,
Create the table using only with the variables which i mentioned.
2) Last Day of Week
=LastDayOfWeek([Transaction Date])
3) First Day of Week
=RelativeDate([Last Day of Week];-55)
4) Concatenate these two fields as Week Range
=[First Day of Week]+"-"+[Last Day of Week]
Can you tell what issue you are facing? share your screenshot etc...