-79.65% is the change from 806 to 164
Calculation steps:
[( 164 - 806 ) ÷ 806] x 100 = -79.65%
Formula
Percentage change = [(164 - 806) / 806] x 100
Subtract the new number by the original number
164 - 806 = -642
-642 ÷ 806 = -0.7965260545905707
-0.7965260545905707 x 100 = -79.65%