210.94% is the change from 128 to 398
Calculation steps:
[( 398 - 128 ) ÷ 128] x 100 = 210.94%
Formula
Percentage change = [(398 - 128) / 128] x 100
Subtract the new number by the original number
398 - 128 = 270
270 ÷ 128 = 2.109375
2.109375 x 100 = 210.94%