-35.48% is the change from 668 to 431
Calculation steps:
[( 431 - 668 ) ÷ 668] x 100 = -35.48%
Formula
Percentage change = [(431 - 668) / 668] x 100
Subtract the new number by the original number
431 - 668 = -237
-237 ÷ 668 = -0.35479041916167664
-0.35479041916167664 x 100 = -35.48%