Atlantis Fisheries issues zero coupon bonds on the market at a price of $462 per bond. Each bond has a face value of $1,000 payable at maturity in 12 years. What is the yield to maturity for these bonds? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Omit the "%" sign in your response.)

There was another question like this posted, but the answer was incorrect. I used the same method PV=-462 n=12 FV=1000 to find that i=6.65% but it says the answer is wrong.

Thank you for your help!