-98.42% is the change from 571 to 9
Calculation steps:
[( 9 - 571 ) ÷ 571] x 100 = -98.42%
Formula
Percentage change = [(9 - 571) / 571] x 100
Subtract the new number by the original number
9 - 571 = -562
-562 ÷ 571 = -0.9842381786339754
-0.9842381786339754 x 100 = -98.42%