21.48% is the change from 647 to 786
Calculation steps:
[( 786 - 647 ) ÷ 647] x 100 = 21.48%
Formula
Percentage change = [(786 - 647) / 647] x 100
Subtract the new number by the original number
786 - 647 = 139
139 ÷ 647 = 0.21483771251931993
0.21483771251931993 x 100 = 21.48%