11.3% is the change from 770 to 857
Calculation steps:
[( 857 - 770 ) ÷ 770] x 100 = 11.3%
Formula
Percentage change = [(857 - 770) / 770] x 100
Subtract the new number by the original number
857 - 770 = 87
87 ÷ 770 = 0.11298701298701298
0.11298701298701298 x 100 = 11.3%