54.98% is the change from 271 to 420
Calculation steps:
[( 420 - 271 ) ÷ 271] x 100 = 54.98%
Formula
Percentage change = [(420 - 271) / 271] x 100
Subtract the new number by the original number
420 - 271 = 149
149 ÷ 271 = 0.5498154981549815
0.5498154981549815 x 100 = 54.98%