-32.93% is the change from 668 to 448
Calculation steps:
[( 448 - 668 ) ÷ 668] x 100 = -32.93%
Formula
Percentage change = [(448 - 668) / 668] x 100
Subtract the new number by the original number
448 - 668 = -220
-220 ÷ 668 = -0.32934131736526945
-0.32934131736526945 x 100 = -32.93%