-74.09% is the change from 853 to 221
Calculation steps:
[( 221 - 853 ) ÷ 853] x 100 = -74.09%
Formula
Percentage change = [(221 - 853) / 853] x 100
Subtract the new number by the original number
221 - 853 = -632
-632 ÷ 853 = -0.7409144196951934
-0.7409144196951934 x 100 = -74.09%