See how a running total differs from a rate of change using parcel deliveries...

https://beausbestthoughtss.opalvector.com/posts/if-20-parcels-became-50-parcels-in-3-hours-what-is-the-rate

See how a running total differs from a rate of change using parcel deliveries as an example. The article compares parcels delivered so far with parcels per hour, and shows why the time window and units matter when reading a work chart.