Rudy purchased a 7% coupon rate bond one year ago for its face value of $1,000. He bought the bond just after the coupon date. Yesterday the bond paid its annual coupon. The bond currently has 15 years until maturity and has a yield to maturity of 9.23%. If Rudy sells the bond today, then what is his percentage return for the last year? Rudy's percentage return for the last year is __%. (Round to two decimal places.)