-31.29% is the change from 668 to 459
Calculation steps:
[( 459 - 668 ) ÷ 668] x 100 = -31.29%
Formula
Percentage change = [(459 - 668) / 668] x 100
Subtract the new number by the original number
459 - 668 = -209
-209 ÷ 668 = -0.312874251497006
-0.312874251497006 x 100 = -31.29%