-6.23% is the change from 899 to 843
Calculation steps:
[( 843 - 899 ) ÷ 899] x 100 = -6.23%
Formula
Percentage change = [(843 - 899) / 899] x 100
Subtract the new number by the original number
843 - 899 = -56
-56 ÷ 899 = -0.06229143492769744
-0.06229143492769744 x 100 = -6.23%