-0.86% is the change from 694 to 688
Calculation steps:
[( 688 - 694 ) ÷ 694] x 100 = -0.86%
Formula
Percentage change = [(688 - 694) / 694] x 100
Subtract the new number by the original number
688 - 694 = -6
-6 ÷ 694 = -0.008645533141210375
-0.008645533141210375 x 100 = -0.86%