Performance Tasks measures by top departement display wrong values

Summary

Create an Analysis to display measures for performance tasks/Top level Departement

Content

Hi gurus,

 

I would like to build an analysis that will allow me to display by Top Department the total number of completed or in progress performance tasks

 

But the Measure used display wrong values because i only have to 2 employee in the departement (Département Admin et Qualité) and only one employee with a performance document.

 

You can see a sample of the output i need to have