-4.3% is the change from 698 to 668
Calculation steps:
[( 668 - 698 ) ÷ 698] x 100 = -4.3%
Formula
Percentage change = [(668 - 698) / 698] x 100
Subtract the new number by the original number
668 - 698 = -30
-30 ÷ 698 = -0.04297994269340974
-0.04297994269340974 x 100 = -4.3%