A corporate bond with a coupon rate of $6\mathrm{.}5$ percent has $15$ years left to maturity. It has h$$d a credit rating of BBB and a yield to maturity of $7\mathrm{.}2$ percent. The firm has recently gotten into some trouble and the rating agency is downgrading the bonds to BB$.$ The new appropriate discount rate will be $8\mathrm{.}5$ percent. $($Assume interest payments are semiannual.$)$ What will be the change in the bond's price in dollars? What will be the change in the percentage? Note: Negative answer should be indicated by a minus sign. Do not round intermediate calculations. Round your final answer to $2$ decimal places.