11.8% is the change from 161 to 180
Calculation steps:
[( 180 - 161 ) ÷ 161] x 100 = 11.8%
Formula
Percentage change = [(180 - 161) / 161] x 100
Subtract the new number by the original number
180 - 161 = 19
19 ÷ 161 = 0.11801242236024845
0.11801242236024845 x 100 = 11.8%