83.89% is the change from 180 to 331
Calculation steps:
[( 331 - 180 ) ÷ 180] x 100 = 83.89%
Formula
Percentage change = [(331 - 180) / 180] x 100
Subtract the new number by the original number
331 - 180 = 151
151 ÷ 180 = 0.8388888888888889
0.8388888888888889 x 100 = 83.89%