Both Bond A and Bond B have $8\mathrm{.}8$ percent coupons and are priced at par value. Bond A has $9$ years to maturity, while Bond B has $18$ years to maturity.

If interest rates suddenly rise by $1\mathrm{.}4$ percent, what is the percentage change in price of Bond A and Bond B$?$

Note: A negative value should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places.

If interest rates suddenly fall by $1\mathrm{.}4$ percent instead, what would be the percentage change in price of Bond A and Bond B$?$

Note: Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places.