15.13% is the change from 271 to 312
Calculation steps:
[( 312 - 271 ) ÷ 271] x 100 = 15.13%
Formula
Percentage change = [(312 - 271) / 271] x 100
Subtract the new number by the original number
312 - 271 = 41
41 ÷ 271 = 0.15129151291512916
0.15129151291512916 x 100 = 15.13%