Subtracting from two difference tables

christinas 

here is suggestion:

1. I think you need to create some dim tables (e.g. job family name table ) and connect dim table to these two fact tables.  Then in the matrix visual, the job family info should comes from the dim table.

2. Since you mentioned the tables with same columns. You can append tables in the power query

https://learn.microsoft.com/bs-latn-ba/power-query/append-queries?wt.mc_id=DP-MVP-5004616

or do it by using DAX

https://learn.microsoft.com/en-us/dax/union-function-dax?wt.mc_id=DP-MVP-5004616

If these two approahes still does not work for you, pls provide some sample data and expected output.