-31.13% is the change from 967 to 666
Calculation steps:
[( 666 - 967 ) ÷ 967] x 100 = -31.13%
Formula
Percentage change = [(666 - 967) / 967] x 100
Subtract the new number by the original number
666 - 967 = -301
-301 ÷ 967 = -0.3112719751809721
-0.3112719751809721 x 100 = -31.13%