Nikita Enterprises has bonds on the market making annual payments, with eleven years to maturity, a par value of $$1,000,$ and selling for $$958.$ At this price, the bonds yield $6\mathrm{.}4$ percent. What must the coupon rate be on the bonds? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$