-85.03% is the change from 648 to 97
Calculation steps:
[( 97 - 648 ) ÷ 648] x 100 = -85.03%
Formula
Percentage change = [(97 - 648) / 648] x 100
Subtract the new number by the original number
97 - 648 = -551
-551 ÷ 648 = -0.8503086419753086
-0.8503086419753086 x 100 = -85.03%