308.59% is the change from 128 to 523
Calculation steps:
[( 523 - 128 ) ÷ 128] x 100 = 308.59%
Formula
Percentage change = [(523 - 128) / 128] x 100
Subtract the new number by the original number
523 - 128 = 395
395 ÷ 128 = 3.0859375
3.0859375 x 100 = 308.59%