-32.04% is the change from 668 to 454
Calculation steps:
[( 454 - 668 ) ÷ 668] x 100 = -32.04%
Formula
Percentage change = [(454 - 668) / 668] x 100
Subtract the new number by the original number
454 - 668 = -214
-214 ÷ 668 = -0.3203592814371258
-0.3203592814371258 x 100 = -32.04%