-18.07% is the change from 996 to 816
Calculation steps:
[( 816 - 996 ) ÷ 996] x 100 = -18.07%
Formula
Percentage change = [(816 - 996) / 996] x 100
Subtract the new number by the original number
816 - 996 = -180
-180 ÷ 996 = -0.18072289156626506
-0.18072289156626506 x 100 = -18.07%