-15.48% is the change from 788 to 666
Calculation steps:
[( 666 - 788 ) ÷ 788] x 100 = -15.48%
Formula
Percentage change = [(666 - 788) / 788] x 100
Subtract the new number by the original number
666 - 788 = -122
-122 ÷ 788 = -0.1548223350253807
-0.1548223350253807 x 100 = -15.48%