-2.31% is the change from 694 to 678
Calculation steps:
[( 678 - 694 ) ÷ 694] x 100 = -2.31%
Formula
Percentage change = [(678 - 694) / 694] x 100
Subtract the new number by the original number
678 - 694 = -16
-16 ÷ 694 = -0.023054755043227664
-0.023054755043227664 x 100 = -2.31%