-52.99% is the change from 668 to 314
Calculation steps:
[( 314 - 668 ) ÷ 668] x 100 = -52.99%
Formula
Percentage change = [(314 - 668) / 668] x 100
Subtract the new number by the original number
314 - 668 = -354
-354 ÷ 668 = -0.5299401197604791
-0.5299401197604791 x 100 = -52.99%