-72.96% is the change from 821 to 222
Calculation steps:
[( 222 - 821 ) ÷ 821] x 100 = -72.96%
Formula
Percentage change = [(222 - 821) / 821] x 100
Subtract the new number by the original number
222 - 821 = -599
-599 ÷ 821 = -0.7295980511571255
-0.7295980511571255 x 100 = -72.96%