-73.79% is the change from 866 to 227
Calculation steps:
[( 227 - 866 ) ÷ 866] x 100 = -73.79%
Formula
Percentage change = [(227 - 866) / 866] x 100
Subtract the new number by the original number
227 - 866 = -639
-639 ÷ 866 = -0.7378752886836027
-0.7378752886836027 x 100 = -73.79%