-80.95% is the change from 866 to 165
Calculation steps:
[( 165 - 866 ) ÷ 866] x 100 = -80.95%
Formula
Percentage change = [(165 - 866) / 866] x 100
Subtract the new number by the original number
165 - 866 = -701
-701 ÷ 866 = -0.8094688221709007
-0.8094688221709007 x 100 = -80.95%