396.88% is the change from 128 to 636
Calculation steps:
[( 636 - 128 ) ÷ 128] x 100 = 396.88%
Formula
Percentage change = [(636 - 128) / 128] x 100
Subtract the new number by the original number
636 - 128 = 508
508 ÷ 128 = 3.96875
3.96875 x 100 = 396.88%