-53.22% is the change from 853 to 399
Calculation steps:
[( 399 - 853 ) ÷ 853] x 100 = -53.22%
Formula
Percentage change = [(399 - 853) / 853] x 100
Subtract the new number by the original number
399 - 853 = -454
-454 ÷ 853 = -0.5322391559202814
-0.5322391559202814 x 100 = -53.22%