10.15% is the change from 778 to 857
Calculation steps:
[( 857 - 778 ) ÷ 778] x 100 = 10.15%
Formula
Percentage change = [(857 - 778) / 778] x 100
Subtract the new number by the original number
857 - 778 = 79
79 ÷ 778 = 0.10154241645244216
0.10154241645244216 x 100 = 10.15%