-15.28% is the change from 779 to 660
Calculation steps:
[( 660 - 779 ) ÷ 779] x 100 = -15.28%
Formula
Percentage change = [(660 - 779) / 779] x 100
Subtract the new number by the original number
660 - 779 = -119
-119 ÷ 779 = -0.1527599486521181
-0.1527599486521181 x 100 = -15.28%