-83.69% is the change from 558 to 91
Calculation steps:
[( 91 - 558 ) ÷ 558] x 100 = -83.69%
Formula
Percentage change = [(91 - 558) / 558] x 100
Subtract the new number by the original number
91 - 558 = -467
-467 ÷ 558 = -0.8369175627240143
-0.8369175627240143 x 100 = -83.69%