-97.66% is the change from 853 to 20
Calculation steps:
[( 20 - 853 ) ÷ 853] x 100 = -97.66%
Formula
Percentage change = [(20 - 853) / 853] x 100
Subtract the new number by the original number
20 - 853 = -833
-833 ÷ 853 = -0.9765533411488863
-0.9765533411488863 x 100 = -97.66%