-98.48% is the change from 853 to 13
Calculation steps:
[( 13 - 853 ) ÷ 853] x 100 = -98.48%
Formula
Percentage change = [(13 - 853) / 853] x 100
Subtract the new number by the original number
13 - 853 = -840
-840 ÷ 853 = -0.984759671746776
-0.984759671746776 x 100 = -98.48%