-2.59% is the change from 696 to 678
Calculation steps:
[( 678 - 696 ) ÷ 696] x 100 = -2.59%
Formula
Percentage change = [(678 - 696) / 696] x 100
Subtract the new number by the original number
678 - 696 = -18
-18 ÷ 696 = -0.02586206896551724
-0.02586206896551724 x 100 = -2.59%