-96.88% is the change from 577 to 18
Calculation steps:
[( 18 - 577 ) ÷ 577] x 100 = -96.88%
Formula
Percentage change = [(18 - 577) / 577] x 100
Subtract the new number by the original number
18 - 577 = -559
-559 ÷ 577 = -0.9688041594454073
-0.9688041594454073 x 100 = -96.88%