-26.2% is the change from 668 to 493
Calculation steps:
[( 493 - 668 ) ÷ 668] x 100 = -26.2%
Formula
Percentage change = [(493 - 668) / 668] x 100
Subtract the new number by the original number
493 - 668 = -175
-175 ÷ 668 = -0.2619760479041916
-0.2619760479041916 x 100 = -26.2%