-98.8% is the change from 498 to 6
Calculation steps:
[( 6 - 498 ) ÷ 498] x 100 = -98.8%
Formula
Percentage change = [(6 - 498) / 498] x 100
Subtract the new number by the original number
6 - 498 = -492
-492 ÷ 498 = -0.9879518072289156
-0.9879518072289156 x 100 = -98.8%