-18.37% is the change from 996 to 813
Calculation steps:
[( 813 - 996 ) ÷ 996] x 100 = -18.37%
Formula
Percentage change = [(813 - 996) / 996] x 100
Subtract the new number by the original number
813 - 996 = -183
-183 ÷ 996 = -0.18373493975903615
-0.18373493975903615 x 100 = -18.37%