25.04% is the change from 647 to 809
Calculation steps:
[( 809 - 647 ) ÷ 647] x 100 = 25.04%
Formula
Percentage change = [(809 - 647) / 647] x 100
Subtract the new number by the original number
809 - 647 = 162
162 ÷ 647 = 0.250386398763524
0.250386398763524 x 100 = 25.04%