499% is the change from 100 to 599
Calculation steps:
[( 599 - 100 ) ÷ 100] x 100 = 499%
Formula
Percentage change = [(599 - 100) / 100] x 100
Subtract the new number by the original number
599 - 100 = 499
499 ÷ 100 = 4.99
4.99 x 100 = 499%
Example