508.59% is the change from 128 to 779
Calculation steps:
[( 779 - 128 ) ÷ 128] x 100 = 508.59%
Formula
Percentage change = [(779 - 128) / 128] x 100
Subtract the new number by the original number
779 - 128 = 651
651 ÷ 128 = 5.0859375
5.0859375 x 100 = 508.59%