-96.79% is the change from 561 to 18
Calculation steps:
[( 18 - 561 ) ÷ 561] x 100 = -96.79%
Formula
Percentage change = [(18 - 561) / 561] x 100
Subtract the new number by the original number
18 - 561 = -543
-543 ÷ 561 = -0.9679144385026738
-0.9679144385026738 x 100 = -96.79%