-97.13% is the change from 800 to 23
Calculation steps:
[( 23 - 800 ) ÷ 800] x 100 = -97.13%
Formula
Percentage change = [(23 - 800) / 800] x 100
Subtract the new number by the original number
23 - 800 = -777
-777 ÷ 800 = -0.97125
-0.97125 x 100 = -97.13%