310.94% is the change from 128 to 526
Calculation steps:
[( 526 - 128 ) ÷ 128] x 100 = 310.94%
Formula
Percentage change = [(526 - 128) / 128] x 100
Subtract the new number by the original number
526 - 128 = 398
398 ÷ 128 = 3.109375
3.109375 x 100 = 310.94%