-31.38% is the change from 666 to 457
Calculation steps:
[( 457 - 666 ) ÷ 666] x 100 = -31.38%
Formula
Percentage change = [(457 - 666) / 666] x 100
Subtract the new number by the original number
457 - 666 = -209
-209 ÷ 666 = -0.3138138138138138
-0.3138138138138138 x 100 = -31.38%