-30.03% is the change from 666 to 466
Calculation steps:
[( 466 - 666 ) ÷ 666] x 100 = -30.03%
Formula
Percentage change = [(466 - 666) / 666] x 100
Subtract the new number by the original number
466 - 666 = -200
-200 ÷ 666 = -0.3003003003003003
-0.3003003003003003 x 100 = -30.03%