Use parcel deliveries to see the difference between a running total and a rate...
https://www.romeo-bookmarks.win/compare-a-running-total-of-parcels-delivered-this-week-with-a-rate-in-parcels
Use parcel deliveries to see the difference between a running total and a rate of change. A total might show parcels delivered by noon, while a rate shows parcels per hour over a chosen window