18.32% is the change from 131 to 155
Calculation steps:
[( 155 - 131 ) ÷ 131] x 100 = 18.32%
Formula
Percentage change = [(155 - 131) / 131] x 100
Subtract the new number by the original number
155 - 131 = 24
24 ÷ 131 = 0.183206106870229
0.183206106870229 x 100 = 18.32%