-21.82% is the change from 866 to 677
Calculation steps:
[( 677 - 866 ) ÷ 866] x 100 = -21.82%
Formula
Percentage change = [(677 - 866) / 866] x 100
Subtract the new number by the original number
677 - 866 = -189
-189 ÷ 866 = -0.21824480369515012
-0.21824480369515012 x 100 = -21.82%