-84.74% is the change from 806 to 123
Calculation steps:
[( 123 - 806 ) ÷ 806] x 100 = -84.74%
Formula
Percentage change = [(123 - 806) / 806] x 100
Subtract the new number by the original number
123 - 806 = -683
-683 ÷ 806 = -0.847394540942928
-0.847394540942928 x 100 = -84.74%