Total return for the past year You purchased a zero$-$coupon bond one year ago for $\backslash (\backslash$$ $280\mathrm{.}33\backslash ).$ The market interest rate is now $9$ percent. Assume semiannual compounding. If the bond had $15$ years to maturity when you originally purchased it$,$ what was your total return for the past year? Assume a par value of $\backslash (\backslash$$ $1,000\backslash ).$ Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.\backslash (\backslash \%\backslash )$