-33.83% is the change from 668 to 442
Calculation steps:
[( 442 - 668 ) ÷ 668] x 100 = -33.83%
Formula
Percentage change = [(442 - 668) / 668] x 100
Subtract the new number by the original number
442 - 668 = -226
-226 ÷ 668 = -0.3383233532934132
-0.3383233532934132 x 100 = -33.83%