-83.87% is the change from 558 to 90
Calculation steps:
[( 90 - 558 ) ÷ 558] x 100 = -83.87%
Formula
Percentage change = [(90 - 558) / 558] x 100
Subtract the new number by the original number
90 - 558 = -468
-468 ÷ 558 = -0.8387096774193549
-0.8387096774193549 x 100 = -83.87%