-83.59% is the change from 591 to 97
Calculation steps:
[( 97 - 591 ) ÷ 591] x 100 = -83.59%
Formula
Percentage change = [(97 - 591) / 591] x 100
Subtract the new number by the original number
97 - 591 = -494
-494 ÷ 591 = -0.8358714043993232
-0.8358714043993232 x 100 = -83.59%