12.92% is the change from 271 to 306
Calculation steps:
[( 306 - 271 ) ÷ 271] x 100 = 12.92%
Formula
Percentage change = [(306 - 271) / 271] x 100
Subtract the new number by the original number
306 - 271 = 35
35 ÷ 271 = 0.12915129151291513
0.12915129151291513 x 100 = 12.92%