-31.62% is the change from 974 to 666
Calculation steps:
[( 666 - 974 ) ÷ 974] x 100 = -31.62%
Formula
Percentage change = [(666 - 974) / 974] x 100
Subtract the new number by the original number
666 - 974 = -308
-308 ÷ 974 = -0.3162217659137577
-0.3162217659137577 x 100 = -31.62%