-86.55% is the change from 721 to 97
Calculation steps:
[( 97 - 721 ) ÷ 721] x 100 = -86.55%
Formula
Percentage change = [(97 - 721) / 721] x 100
Subtract the new number by the original number
97 - 721 = -624
-624 ÷ 721 = -0.8654646324549237
-0.8654646324549237 x 100 = -86.55%