-29.6% is the change from 946 to 666
Calculation steps:
[( 666 - 946 ) ÷ 946] x 100 = -29.6%
Formula
Percentage change = [(666 - 946) / 946] x 100
Subtract the new number by the original number
666 - 946 = -280
-280 ÷ 946 = -0.2959830866807611
-0.2959830866807611 x 100 = -29.6%