ABC Inc. recently issued $1,000 par bonds at a 5.25% coupon rate. The bonds have 15 years to maturity and current price of the bond is $850. If the call price is $1,050 and the bond can be called in 10 years, what is the yield to call? Assume semi-annual compounding.

Note: Convert your answer to percentage and round off to two decimal points. Do not enter % in the answer box.