-1.16% is the change from 688 to 680
Calculation steps:
[( 680 - 688 ) ÷ 688] x 100 = -1.16%
Formula
Percentage change = [(680 - 688) / 688] x 100
Subtract the new number by the original number
680 - 688 = -8
-8 ÷ 688 = -0.011627906976744186
-0.011627906976744186 x 100 = -1.16%