A corporate bond has $20$ years to maturity, par value of $$1,000,$ and pays interest semiannually. The quoted coupon rate is $8\%,$ and the bond is priced at $$950.$ The bond is callable in $10$ years at $105\%$ of par. What is the bond's yield to maturity? Give your answer as a percent and to the nearest $0\mathrm{.}01\%($e$.$g$.$ type $3\mathrm{.}25$ if your answer is three and a quarter percent$).$