306.2% is the change from 129 to 524
Calculation steps:
[( 524 - 129 ) ÷ 129] x 100 = 306.2%
Formula
Percentage change = [(524 - 129) / 129] x 100
Subtract the new number by the original number
524 - 129 = 395
395 ÷ 129 = 3.062015503875969
3.062015503875969 x 100 = 306.2%