12.47% is the change from 770 to 866
Calculation steps:
[( 866 - 770 ) ÷ 770] x 100 = 12.47%
Formula
Percentage change = [(866 - 770) / 770] x 100
Subtract the new number by the original number
866 - 770 = 96
96 ÷ 770 = 0.12467532467532468
0.12467532467532468 x 100 = 12.47%