What is the percentage change in price for a zero coupon bond if the yield changes from 6% to 7.5%? The bond has a face value of $1,000 and it matures in 18 years. Use the price determined from the first yield, 6%, as the base in the percentage calculation. The percentage change in the bond price if the yield changes from 6% to 7.5 % is nothing%. (Round to two decimal places.)