551.56% is the change from 128 to 834
Calculation steps:
[( 834 - 128 ) ÷ 128] x 100 = 551.56%
Formula
Percentage change = [(834 - 128) / 128] x 100
Subtract the new number by the original number
834 - 128 = 706
706 ÷ 128 = 5.515625
5.515625 x 100 = 551.56%