55.42% is the change from 83 to 129
Calculation steps:
[( 129 - 83 ) ÷ 83] x 100 = 55.42%
Formula
Percentage change = [(129 - 83) / 83] x 100
Subtract the new number by the original number
129 - 83 = 46
46 ÷ 83 = 0.5542168674698795
0.5542168674698795 x 100 = 55.42%