56.13% is the change from 155 to 242
Calculation steps:
[( 242 - 155 ) ÷ 155] x 100 = 56.13%
Formula
Percentage change = [(242 - 155) / 155] x 100
Subtract the new number by the original number
242 - 155 = 87
87 ÷ 155 = 0.5612903225806452
0.5612903225806452 x 100 = 56.13%