A $69\mathrm{.}09\%$ coupon, $17-$year annual bond has a yield to maturity of $9\mathrm{.}23\%.$ Assuming the par value is $1,000$ and the YTM does not change over the next year, what is the capital gain of the bond over the next year? $($Hint: You will need to compute the price of the bond today and the price of the bond in one year.$)$

Display your answer as a percentage to $2$ decimal places. For example, if the answer is $5\mathrm{.}12\%,$ please type in $5\mathrm{.}12.$