Although appealing to more refined tastes, art as a collectible has not always performed so profiably. During 2019, an auction house sold a painting. at auction for a price of 51000,000 . Unfortunately for the previous owner, he had purchased it three years earlier at a price of $1,580,000. What was his annual rate of return on this painting? (A negative value should be indiceted by o minus sign. Do not round intermediate calculations and enter your onswer as a percent rounded to 2 decimal places, e.g., 32.16.)