-13.88% is the change from 800 to 689
Calculation steps:
[( 689 - 800 ) ÷ 800] x 100 = -13.88%
Formula
Percentage change = [(689 - 800) / 800] x 100
Subtract the new number by the original number
689 - 800 = -111
-111 ÷ 800 = -0.13875
-0.13875 x 100 = -13.88%