47.23% is the change from 271 to 399
Calculation steps:
[( 399 - 271 ) ÷ 271] x 100 = 47.23%
Formula
Percentage change = [(399 - 271) / 271] x 100
Subtract the new number by the original number
399 - 271 = 128
128 ÷ 271 = 0.47232472324723246
0.47232472324723246 x 100 = 47.23%