Compare running totals with rates of change through parcel deliveries: parcels...

https://lunasinspiringinsight.novacrestiq.com/posts/what-is-accumulation-in-everyday-language

Compare running totals with rates of change through parcel deliveries: parcels delivered is a total, while parcels per hour is a rate. See how units and a clear time window, like one morning shift, help you interpret the numbers.