19.94% is the change from 647 to 776
Calculation steps:
[( 776 - 647 ) ÷ 647] x 100 = 19.94%
Formula
Percentage change = [(776 - 647) / 647] x 100
Subtract the new number by the original number
776 - 647 = 129
129 ÷ 647 = 0.19938176197836166
0.19938176197836166 x 100 = 19.94%