301.56% is the change from 128 to 514
Calculation steps:
[( 514 - 128 ) ÷ 128] x 100 = 301.56%
Formula
Percentage change = [(514 - 128) / 128] x 100
Subtract the new number by the original number
514 - 128 = 386
386 ÷ 128 = 3.015625
3.015625 x 100 = 301.56%