-84.73% is the change from 596 to 91
Calculation steps:
[( 91 - 596 ) ÷ 596] x 100 = -84.73%
Formula
Percentage change = [(91 - 596) / 596] x 100
Subtract the new number by the original number
91 - 596 = -505
-505 ÷ 596 = -0.8473154362416108
-0.8473154362416108 x 100 = -84.73%