-35.63% is the change from 668 to 430
Calculation steps:
[( 430 - 668 ) ÷ 668] x 100 = -35.63%
Formula
Percentage change = [(430 - 668) / 668] x 100
Subtract the new number by the original number
430 - 668 = -238
-238 ÷ 668 = -0.3562874251497006
-0.3562874251497006 x 100 = -35.63%