-47.31% is the change from 668 to 352
Calculation steps:
[( 352 - 668 ) ÷ 668] x 100 = -47.31%
Formula
Percentage change = [(352 - 668) / 668] x 100
Subtract the new number by the original number
352 - 668 = -316
-316 ÷ 668 = -0.47305389221556887
-0.47305389221556887 x 100 = -47.31%