-21.03% is the change from 799 to 631
Calculation steps:
[( 631 - 799 ) ÷ 799] x 100 = -21.03%
Formula
Percentage change = [(631 - 799) / 799] x 100
Subtract the new number by the original number
631 - 799 = -168
-168 ÷ 799 = -0.21026282853566958
-0.21026282853566958 x 100 = -21.03%