-0.4% is the change from 498 to 496
Calculation steps:
[( 496 - 498 ) ÷ 498] x 100 = -0.4%
Formula
Percentage change = [(496 - 498) / 498] x 100
Subtract the new number by the original number
496 - 498 = -2
-2 ÷ 498 = -0.004016064257028112
-0.004016064257028112 x 100 = -0.4%