The duration of a coupon bond when the interest rate is $10$ percent is $6\mathrm{.}01$ years. What is the precent change in the price of the bond if the interest rate falls to $8\mathrm{.}5$ percent? Assume the bond pays ANNUAL coupons.

Enter answer as a $\%$ to $2$ decimal places. e$.$g enter $0\mathrm{.}03568$ as $3\mathrm{.}57\%,$ but DO NOT ENTER the $\%$ sign.