-79.65% is the change from 811 to 165
Calculation steps:
[( 165 - 811 ) ÷ 811] x 100 = -79.65%
Formula
Percentage change = [(165 - 811) / 811] x 100
Subtract the new number by the original number
165 - 811 = -646
-646 ÷ 811 = -0.7965474722564735
-0.7965474722564735 x 100 = -79.65%