-17.97% is the change from 996 to 817
Calculation steps:
[( 817 - 996 ) ÷ 996] x 100 = -17.97%
Formula
Percentage change = [(817 - 996) / 996] x 100
Subtract the new number by the original number
817 - 996 = -179
-179 ÷ 996 = -0.17971887550200802
-0.17971887550200802 x 100 = -17.97%