How do I find the percentage change in price for Six-Year STRIPS?

U.S. Treasury STRIPS, close of business November 15, 2015 Return to question Maturity November '16 November '17 November '18 Price 99.471 98.782 96.827 Maturity November 19 November 20 November 21 Price 95.035 92.57e 89.342 a-1. Suppose the (quoted) yield on each of the six STRIPS increases by 0.05 percent. Calculate the percentage change in price for the one-year, three-year, and six-year STRIPS (A negative value should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 3 decimal places.) % Answer is complete but not entirely correct. One-year STRIPS Three-year STRIPS So-year (0.050) (149) (1.781) STRIPS