I'm relatively new to excel and am working to build a PivotTable from the information I'm trying to isolate.

I have three columns of information. Column A shows individual customers, column B shows the store they shopped at and column C shows payment performance per account. I need to isolate how many customers total went to a particular store and also the individual payment performance. So in the end I want to be able to sort my pivot table by store and see the total amount of accounts they have as well as the percent of payment performance/total accounts. If anyone could help it would be great!