85.48% is the change from 420 to 779
Calculation steps:
[( 779 - 420 ) ÷ 420] x 100 = 85.48%
Formula
Percentage change = [(779 - 420) / 420] x 100
Subtract the new number by the original number
779 - 420 = 359
359 ÷ 420 = 0.8547619047619047
0.8547619047619047 x 100 = 85.48%