-1.31% is the change from 689 to 680
Calculation steps:
[( 680 - 689 ) ÷ 689] x 100 = -1.31%
Formula
Percentage change = [(680 - 689) / 689] x 100
Subtract the new number by the original number
680 - 689 = -9
-9 ÷ 689 = -0.013062409288824383
-0.013062409288824383 x 100 = -1.31%