-33.93% is the change from 666 to 440
Calculation steps:
[( 440 - 666 ) ÷ 666] x 100 = -33.93%
Formula
Percentage change = [(440 - 666) / 666] x 100
Subtract the new number by the original number
440 - 666 = -226
-226 ÷ 666 = -0.33933933933933935
-0.33933933933933935 x 100 = -33.93%