-96.9% is the change from 581 to 18
Calculation steps:
[( 18 - 581 ) ÷ 581] x 100 = -96.9%
Formula
Percentage change = [(18 - 581) / 581] x 100
Subtract the new number by the original number
18 - 581 = -563
-563 ÷ 581 = -0.9690189328743546
-0.9690189328743546 x 100 = -96.9%