16.82% is the change from 660 to 771
Calculation steps:
[( 771 - 660 ) ÷ 660] x 100 = 16.82%
Formula
Percentage change = [(771 - 660) / 660] x 100
Subtract the new number by the original number
771 - 660 = 111
111 ÷ 660 = 0.16818181818181818
0.16818181818181818 x 100 = 16.82%