Consider a bond with the following features and a hypothetical settlement date of 10 October 2019. Annual Coupon 5% Coupon Payment Frequency Semiannual Interest Payment Dates 30 December and 30 June Maturity Date 30 December 2020 Day-Count Convention 30/360 Annual Yield-to-Maturity 6% Without considering the convexity effect, what is the approximate percentage price change if the bond's yield to maturity decreases by 50 basis points. Use the formula that relies on modified duration. Round your answer to three decimal places and express your answer in percentage terms (e.g., 3.500% not 0.035)