How To Run a Year over Year report by department:

This report will show by customer and department, sales monthly, this year vs. last year.

Input the produce category.

Input the date range on line 5.  For example, if you want this report to show this May vs. May 2018, input the date range 05/01/19 and 05/31/19

Select your printer and hit Go.

Here is a snippet of this report.