Yield to Call and Realized Rates of Return

Goodwynn & Wolf Incorporated $($G&W$)$ issued a bond $7$ years ago. The bond had a $20-$year maturity, a $14\%$ coupon paid annually, a $9\%$ call premium and was issued at par, $$1,000.$ Today, G&W called the bonds. If the original investors had expected G&W to call the bonds in $7$ years, what was the yield to call at the time the bonds were issued? Round your answer to two decimal places.