Suppose that you just bought a four$-$year $$1,000$ coupon bond with a coupon rate of $6\mathrm{.}8\%$ when the market interest rate is $6\mathrm{.}8\%$You sell the bond one year later after the market interest rate falls to $4\mathrm{.}8\%$ The rate of return earned on the bond during the year was $\%($Round your response to two decimal places.$)$