What is the CAGR of revenue that grew from 50,000 to 200,000 in 3 years?

Based on these numbers, the CAGR (compound annual growth rate) is about 58.74% per year.

3 years

What is CAGR?

CAGR (Compound Annual Growth Rate) is the constant annual rate at which a single investment would need to grow to go from its beginning value to its ending value over a given period — it assumes one entry and one exit, unlike XIRR which handles multiple cash flows.