129.79% is the change from 339 to 779
Calculation steps:
[( 779 - 339 ) ÷ 339] x 100 = 129.79%
Formula
Percentage change = [(779 - 339) / 339] x 100
Subtract the new number by the original number
779 - 339 = 440
440 ÷ 339 = 1.2979351032448379
1.2979351032448379 x 100 = 129.79%