99.6% is the change from 498 to 994
Calculation steps:
[( 994 - 498 ) ÷ 498] x 100 = 99.6%
Formula
Percentage change = [(994 - 498) / 498] x 100
Subtract the new number by the original number
994 - 498 = 496
496 ÷ 498 = 0.9959839357429718
0.9959839357429718 x 100 = 99.6%