User Export is used to pull a list of profile changes per date. 

The user role and date can be set, and the list exported to a CSV file to view any profile changes that occurred within the chosen date range. 
  1. Go to Core > System Tools > User Export
  2. Select a role from the drop down
  3. Select a date
  4. Select Export to CSV
  5. The CSV will show a list of users whose profile was changed in that date range.