16.13% is the change from 155 to 180
Calculation steps:
[( 180 - 155 ) ÷ 155] x 100 = 16.13%
Formula
Percentage change = [(180 - 155) / 155] x 100
Subtract the new number by the original number
180 - 155 = 25
25 ÷ 155 = 0.16129032258064516
0.16129032258064516 x 100 = 16.13%