A bond has a Macaulay duration of 9.50 and is priced to yield 7.5?%. If interest rates go up so that the yield goes to 8.0 %?, what will be the percentage change in the price of the? bond? Now, if the yield on this bond goes down to 7?%, what will be the? bond's percentage change in? price? Comment on your findings.

If interest rates go up to 8.0?%, the percentage change in the price of the bond is

____%. ?(Round to two decimal? places.)