Triple Aces Corp has a risky bond with face value of $1,000, annual coupon rate of 12%, maturity of seven years, and an opportunity cost of capital of 9%. If bondholders expect that there is only a 50% chance that they will receive each of the last two payments (including the ending principal payment), what is this bonds yield-to-maturity? Enter your answer as a perecent without the %; round your final answer to two decimals.