16.82% is the change from 666 to 778
Calculation steps:
[( 778 - 666 ) ÷ 666] x 100 = 16.82%
Formula
Percentage change = [(778 - 666) / 666] x 100
Subtract the new number by the original number
778 - 666 = 112
112 ÷ 666 = 0.16816816816816818
0.16816816816816818 x 100 = 16.82%