-88.88% is the change from 800 to 89
Calculation steps:
[( 89 - 800 ) ÷ 800] x 100 = -88.88%
Formula
Percentage change = [(89 - 800) / 800] x 100
Subtract the new number by the original number
89 - 800 = -711
-711 ÷ 800 = -0.88875
-0.88875 x 100 = -88.88%