301.55% is the change from 129 to 518
Calculation steps:
[( 518 - 129 ) ÷ 129] x 100 = 301.55%
Formula
Percentage change = [(518 - 129) / 129] x 100
Subtract the new number by the original number
518 - 129 = 389
389 ÷ 129 = 3.0155038759689923
3.0155038759689923 x 100 = 301.55%