434.38% is the change from 128 to 684
Calculation steps:
[( 684 - 128 ) ÷ 128] x 100 = 434.38%
Formula
Percentage change = [(684 - 128) / 128] x 100
Subtract the new number by the original number
684 - 128 = 556
556 ÷ 128 = 4.34375
4.34375 x 100 = 434.38%