Trying to create a report summary subreport

[lith]

I don't know if I'm doing something plain wrong here or not, I've tried to do it a few different ways but nothing seems to work. I have a report that based on parameters shows a list of residents in a nursing home, some info about them, the most important being what insurance they have. What I'm trying to do is create a summary for the end of the report that will show how many people in the given report have each different insurance plan, and calculate I suppose against the total records to show what percent of people in a given report (by nursing home, doctor, etc, which I already have) have each given plan. Any thoughts on how this should be done? Any help would be much appreciated.