-37.43% is the change from 668 to 418
Calculation steps:
[( 418 - 668 ) ÷ 668] x 100 = -37.43%
Formula
Percentage change = [(418 - 668) / 668] x 100
Subtract the new number by the original number
418 - 668 = -250
-250 ÷ 668 = -0.37425149700598803
-0.37425149700598803 x 100 = -37.43%