20.96% is the change from 644 to 779
Calculation steps:
[( 779 - 644 ) ÷ 644] x 100 = 20.96%
Formula
Percentage change = [(779 - 644) / 644] x 100
Subtract the new number by the original number
779 - 644 = 135
135 ÷ 644 = 0.2096273291925466
0.2096273291925466 x 100 = 20.96%