what is the % change in the area of a rectangle when its length increases by 35 % and its width decreases by 35 % ?
( 135 / 10 ) * ( 65 / 10 ) = 8775 / 100 ~ 88 of original area 0.88 is a 12 % decrease from 100 / 100 - > d
subtract(const_100, divide(multiply(add(const_100, 35), subtract(const_100, 35)), const_100))