Although appealing to more refined tastes, art as a collectible

has not always performed so profitably. Assume that in $2015,$ an

auction house sold a statute at auction for a price of $$10,521,500.$

Unfortunately for the previous owner, he had purchased it in

$2009$ at a price of $$12,567,500.$ What was his annual rate of

return on this sculpture?

Note: A negative answer should be indicated by a minus sign.

Do not round intermediate calculations and enter your answer

as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

Rate of return