1.3% is the change from 770 to 780
Calculation steps:
[( 780 - 770 ) ÷ 770] x 100 = 1.3%
Formula
Percentage change = [(780 - 770) / 770] x 100
Subtract the new number by the original number
780 - 770 = 10
10 ÷ 770 = 0.012987012987012988
0.012987012987012988 x 100 = 1.3%