-96.93% is the change from 587 to 18
Calculation steps:
[( 18 - 587 ) ÷ 587] x 100 = -96.93%
Formula
Percentage change = [(18 - 587) / 587] x 100
Subtract the new number by the original number
18 - 587 = -569
-569 ÷ 587 = -0.969335604770017
-0.969335604770017 x 100 = -96.93%