If you want to collect this data for a specific
execution, you need to save the data before execution into a table, and then
after execution read the DMV again to compute the delta. A presumptions is that
there are no other executions of the procedure at the same time.
than using dm.sys_exec_query_stats, you can use dm.sys_exec_procedure_stats, so
that you get values on procedure level instead rather than on query