3.87% is the change from 155 to 161
Calculation steps:
[( 161 - 155 ) ÷ 155] x 100 = 3.87%
Formula
Percentage change = [(161 - 155) / 155] x 100
Subtract the new number by the original number
161 - 155 = 6
6 ÷ 155 = 0.03870967741935484
0.03870967741935484 x 100 = 3.87%