-96.85% is the change from 571 to 18
Calculation steps:
[( 18 - 571 ) ÷ 571] x 100 = -96.85%
Formula
Percentage change = [(18 - 571) / 571] x 100
Subtract the new number by the original number
18 - 571 = -553
-553 ÷ 571 = -0.968476357267951
-0.968476357267951 x 100 = -96.85%