Help needed with a visual and filtering

I am trying to build a "store" level dashboard that displays key metrics for a single location.  That is not an issue as I have a 'floating' table that pulls all the data I'm looking for.  Now, I need to build a chart that measures the volumes of all the stores in a district against the district average (count of events for the district/count of locations in the district).  The issue I'm having is that when the filter selection is for 1 store, I cannot get the visual to display all the stores in the district.  First pic is what I'm looking to achieve (in excel format).  Second is where I am in PowerBI.  What is the best way to achieve this?