87.6% is the change from 129 to 242
Calculation steps:
[( 242 - 129 ) ÷ 129] x 100 = 87.6%
Formula
Percentage change = [(242 - 129) / 129] x 100
Subtract the new number by the original number
242 - 129 = 113
113 ÷ 129 = 0.875968992248062
0.875968992248062 x 100 = 87.6%