-74.51% is the change from 867 to 221
Calculation steps:
[( 221 - 867 ) ÷ 867] x 100 = -74.51%
Formula
Percentage change = [(221 - 867) / 867] x 100
Subtract the new number by the original number
221 - 867 = -646
-646 ÷ 867 = -0.7450980392156863
-0.7450980392156863 x 100 = -74.51%