-96.89% is the change from 579 to 18
Calculation steps:
[( 18 - 579 ) ÷ 579] x 100 = -96.89%
Formula
Percentage change = [(18 - 579) / 579] x 100
Subtract the new number by the original number
18 - 579 = -561
-561 ÷ 579 = -0.9689119170984456
-0.9689119170984456 x 100 = -96.89%