17.12% is the change from 666 to 780
Calculation steps:
[( 780 - 666 ) ÷ 666] x 100 = 17.12%
Formula
Percentage change = [(780 - 666) / 666] x 100
Subtract the new number by the original number
780 - 666 = 114
114 ÷ 666 = 0.17117117117117117
0.17117117117117117 x 100 = 17.12%