$($Interest Rate risk$)$ Bond $S$ has $4$ years to maturity. Bond T has $30$ years to maturity. Both have $9\%$ coupons paid semi$-$annually, and are priced at par value. If the interest rate$($yield to maturity$)$ suddenly rises by $0\mathrm{.}7\%,$ the percentage change in the price of Bond $S$ is $q,($Keep two decimal numbers and the sign.$)$