-78.64% is the change from 866 to 185
Calculation steps:
[( 185 - 866 ) ÷ 866] x 100 = -78.64%
Formula
Percentage change = [(185 - 866) / 866] x 100
Subtract the new number by the original number
185 - 866 = -681
-681 ÷ 866 = -0.7863741339491916
-0.7863741339491916 x 100 = -78.64%