50.55% is the change from 271 to 408
Calculation steps:
[( 408 - 271 ) ÷ 271] x 100 = 50.55%
Formula
Percentage change = [(408 - 271) / 271] x 100
Subtract the new number by the original number
408 - 271 = 137
137 ÷ 271 = 0.5055350553505535
0.5055350553505535 x 100 = 50.55%