Growth efficiency: new + expansion MRR divided by lost MRR.
Shows if you are adding revenue faster than losing it. Higher = healthier growth.
Healthy SaaS: 4+ is strong; 2-4 is okay; < 2 suggests retention issues or slow growth.
New MRR $20k; Expansion $8k; Churn $5k; Contraction $3k → Quick ratio = (20+8)/(5+3) = 3.5.
Ignoring contraction; comparing across different growth stages; not normalizing for seasonality.
Financials slide: quick ratio alongside NDR and churn.
Quick ratio 3.5; adding $3.50 for every $1 lost.