242.19% is the change from 128 to 438
Calculation steps:
[( 438 - 128 ) ÷ 128] x 100 = 242.19%
Formula
Percentage change = [(438 - 128) / 128] x 100
Subtract the new number by the original number
438 - 128 = 310
310 ÷ 128 = 2.421875
2.421875 x 100 = 242.19%