49.45% is the change from 271 to 405
Calculation steps:
[( 405 - 271 ) ÷ 271] x 100 = 49.45%
Formula
Percentage change = [(405 - 271) / 271] x 100
Subtract the new number by the original number
405 - 271 = 134
134 ÷ 271 = 0.4944649446494465
0.4944649446494465 x 100 = 49.45%