Formula
(Current period value - Prior period value) / Prior period value x 100
How to measure
Track the defined north star metric on a consistent cadence and calculate its percentage change from the prior comparable period.
Why track it
Tracking growth of the north star itself, rather than proxy metrics, keeps the whole team focused on the outcome that actually reflects delivered value.
Example
A company's north star, weekly active teams completing a core action, grows 8% month over month after a targeted onboarding fix.