-74.25% is the change from 866 to 223
Calculation steps:
[( 223 - 866 ) ÷ 866] x 100 = -74.25%
Formula
Percentage change = [(223 - 866) / 866] x 100
Subtract the new number by the original number
223 - 866 = -643
-643 ÷ 866 = -0.7424942263279446
-0.7424942263279446 x 100 = -74.25%