Look at % cannabinoids recovered, not % of biomass recovered.
10kg input. You get 22% yeild vs 18% yield. One was a fatty mess at 70% cannabinoids, the other at 80%. Which was the win? (Work the math)
Potency of input X Weight of input = input cannabinoids.
Potency of output x weight => output cannabinoids.
Output/input = extraction efficiency.
Won’t vary near as much as what you’re measuring at the moment