-96.48% is the change from 853 to 30
Calculation steps:
[( 30 - 853 ) ÷ 853] x 100 = -96.48%
Formula
Percentage change = [(30 - 853) / 853] x 100
Subtract the new number by the original number
30 - 853 = -823
-823 ÷ 853 = -0.9648300117233294
-0.9648300117233294 x 100 = -96.48%