-79.45% is the change from 866 to 178
Calculation steps:
[( 178 - 866 ) ÷ 866] x 100 = -79.45%
Formula
Percentage change = [(178 - 866) / 866] x 100
Subtract the new number by the original number
178 - 866 = -688
-688 ÷ 866 = -0.7944572748267898
-0.7944572748267898 x 100 = -79.45%