please help with this finance related question

Bond Dave has a 5 percent coupon rate, makes semiannual payments, a 8 percent YTM, and 8 years to maturity. If interest rates suddenly rise by 4 percent, what is the percentage change in the price of Bond Dave? Enter the answer with 4 decimals (e.g. 0.0123). Question 6 1 out of 1 pts You purchase a bond with an invoice price of \$987. The bond has a coupon rate of 3 percent, and there are 2 months to the next semiannual coupon date. What is the clean price of the bond? Enter the answer with 2 decimals (e.g. 954.23)