A Japanese company has a bond that sells for $106\mathrm{.}812$ percent of its $100,000$ par value. The bond has a coupon rate of $6\mathrm{.}7$ percent paid annually and matures in $21$ years. What is the yield to maturity of this bond?

Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

Yield to maturity