-96.07% is the change from 866 to 34
Calculation steps:
[( 34 - 866 ) ÷ 866] x 100 = -96.07%
Formula
Percentage change = [(34 - 866) / 866] x 100
Subtract the new number by the original number
34 - 866 = -832
-832 ÷ 866 = -0.9607390300230947
-0.9607390300230947 x 100 = -96.07%