-96.37% is the change from 496 to 18
Calculation steps:
[( 18 - 496 ) ÷ 496] x 100 = -96.37%
Formula
Percentage change = [(18 - 496) / 496] x 100
Subtract the new number by the original number
18 - 496 = -478
-478 ÷ 496 = -0.9637096774193549
-0.9637096774193549 x 100 = -96.37%