-84.24% is the change from 571 to 90
Calculation steps:
[( 90 - 571 ) ÷ 571] x 100 = -84.24%
Formula
Percentage change = [(90 - 571) / 571] x 100
Subtract the new number by the original number
90 - 571 = -481
-481 ÷ 571 = -0.8423817863397548
-0.8423817863397548 x 100 = -84.24%