5.06% is the change from 770 to 809
Calculation steps:
[( 809 - 770 ) ÷ 770] x 100 = 5.06%
Formula
Percentage change = [(809 - 770) / 770] x 100
Subtract the new number by the original number
809 - 770 = 39
39 ÷ 770 = 0.05064935064935065
0.05064935064935065 x 100 = 5.06%