273.44% is the change from 128 to 478
Calculation steps:
[( 478 - 128 ) ÷ 128] x 100 = 273.44%
Formula
Percentage change = [(478 - 128) / 128] x 100
Subtract the new number by the original number
478 - 128 = 350
350 ÷ 128 = 2.734375
2.734375 x 100 = 273.44%