-15.7% is the change from 790 to 666
Calculation steps:
[( 666 - 790 ) ÷ 790] x 100 = -15.7%
Formula
Percentage change = [(666 - 790) / 790] x 100
Subtract the new number by the original number
666 - 790 = -124
-124 ÷ 790 = -0.1569620253164557
-0.1569620253164557 x 100 = -15.7%