Help with Dashboards

Help with Dashboards

*New to the creator
Im trying to display weekly productivity numbers in the dashboard per region. 

My Form fields: 
#hours (billable hours)
Available hours ( number of available hours per employee per week) 
Productivity (formula field) #hours/available hours *100 round 2
Total Productivity ( sum of all productivities / by number of employees

Problem: I can not figure out how to display the total productivity.

Example:
Annette_A (employee) |  7  billable hours | 28 (available hours) | Project X = 25%
Annette_A (employee) |  7 billable hours |  28 (available hours)  | Project Z = 25%
Joe_A (employee) |  15 billable hours | 30 (available hours) | Project Y =50%

Total productivity =  50% per week ending  6/26/22

I appreciate any help you can provide.