-18.57% is the change from 996 to 811
Calculation steps:
[( 811 - 996 ) ÷ 996] x 100 = -18.57%
Formula
Percentage change = [(811 - 996) / 996] x 100
Subtract the new number by the original number
811 - 996 = -185
-185 ÷ 996 = -0.1857429718875502
-0.1857429718875502 x 100 = -18.57%