-28.89% is the change from 668 to 475
Calculation steps:
[( 475 - 668 ) ÷ 668] x 100 = -28.89%
Formula
Percentage change = [(475 - 668) / 668] x 100
Subtract the new number by the original number
475 - 668 = -193
-193 ÷ 668 = -0.28892215568862273
-0.28892215568862273 x 100 = -28.89%