-30.84% is the change from 668 to 462
Calculation steps:
[( 462 - 668 ) ÷ 668] x 100 = -30.84%
Formula
Percentage change = [(462 - 668) / 668] x 100
Subtract the new number by the original number
462 - 668 = -206
-206 ÷ 668 = -0.3083832335329341
-0.3083832335329341 x 100 = -30.84%