49900% is the change from 1 to 500
Calculation steps:
[( 500 - 1 ) ÷ 1] x 100 = 49900%
Formula
Percentage change = [(500 - 1) / 1] x 100
Subtract the new number by the original number
500 - 1 = 499
499 ÷ 1 = 499
499 x 100 = 49900%
Example