Laurel Inc. and Hardy Corp. both have 8 percent coupon bonds outstanding, with semiannual interest payments, and both are priced at par value. The Laurel Inc. bond has 6 years to maturity, whereas the Hardy Corp. bond has 15 years to maturity. (Do not round intermediate calculations. Round the final answers to 2 decimal places.) If interest rates suddenly rise by 2 percent, what is the percentage change in the price of these bonds? (Negative answers should be indicated by a minus sign.) If interest rates were to suddenly fall by 2 percent instead, what would the percentage change in the price of these bonds be then