-50.53% is the change from 853 to 422
Calculation steps:
[( 422 - 853 ) ÷ 853] x 100 = -50.53%
Formula
Percentage change = [(422 - 853) / 853] x 100
Subtract the new number by the original number
422 - 853 = -431
-431 ÷ 853 = -0.5052754982415005
-0.5052754982415005 x 100 = -50.53%