13.28% is the change from 271 to 307
Calculation steps:
[( 307 - 271 ) ÷ 271] x 100 = 13.28%
Formula
Percentage change = [(307 - 271) / 271] x 100
Subtract the new number by the original number
307 - 271 = 36
36 ÷ 271 = 0.13284132841328414
0.13284132841328414 x 100 = 13.28%