Without considering the convexity ettect, what is the approximate percentage portfolio's value change it the portfolio's yield decreases by So basis points? Use the formula that roles on modified duration. Round your answer to three decimal places and express your answer in percentage terms o.1.500% not 0.035) 451 0.05 6.76 OS Without considering the convexity ettect, what is the approximate percentage portfolio's value change it the portfolio's yield decreases by So basis points? Use the formula that roles on modified duration. Round your answer to three decimal places and express your answer in percentage terms o.1.500% not 0.035) 451 0.05 6.76 OS