-79.78% is the change from 806 to 163
Calculation steps:
[( 163 - 806 ) ÷ 806] x 100 = -79.78%
Formula
Percentage change = [(163 - 806) / 806] x 100
Subtract the new number by the original number
163 - 806 = -643
-643 ÷ 806 = -0.7977667493796526
-0.7977667493796526 x 100 = -79.78%