Your Productivity Standard has multiple rows and when it is aggregated with the sum() function - the value is higher than the Dimension being returned in the left most side of the view. For instance Andrea has a sum(productivity standard) of 6. To fix this use avg() instead and then the calculations work out.
So getting a checkmark to appear per day will require a fair bit of work - you can see examples here - Older But Still Useful – Conditional Formatting | Drawing with Numbers
As for the calculation of the last two values. This will require some help with Table Calculations to select the values for the last column -> [Last value in row]
ifnull(window_avg(if last()=0 then sum([Unique User By Day ]) end),0)
and a calculation for [2nd to Last value in row]
ifnull(window_avg(if last()=1 then sum([Unique User By Day ]) end),0)
and then a calculation to find the difference and just display that - [Diff to two last values].
if last()=0 then
window_avg([Last value in row]-[2nd to Last value in row])
These are advanced Tablea Calculations because we have to pull out the value from the respective columns, then represent these values across every week in the view (done with the if last()=0 or if last()=1) and then finally running a calculation of the first minus the second and averaging taht value so it represents one instance instead of a sum of all columns.
I believe this was originally uploaded with version 10.1 which is not supported so I have saved this for you in version 10.2 - the oldest I have installed on my pc.
Tableau_ Unique_v10.2.twbx 39.5 KB