-99.6% is the change from 498 to 2
Calculation steps:
[( 2 - 498 ) ÷ 498] x 100 = -99.6%
Formula
Percentage change = [(2 - 498) / 498] x 100
Subtract the new number by the original number
2 - 498 = -496
-496 ÷ 498 = -0.9959839357429718
-0.9959839357429718 x 100 = -99.6%