72.38% is the change from 181 to 312
Calculation steps:
[( 312 - 181 ) ÷ 181] x 100 = 72.38%
Formula
Percentage change = [(312 - 181) / 181] x 100
Subtract the new number by the original number
312 - 181 = 131
131 ÷ 181 = 0.7237569060773481
0.7237569060773481 x 100 = 72.38%