-99.77% is the change from 853 to 2
Calculation steps:
[( 2 - 853 ) ÷ 853] x 100 = -99.77%
Formula
Percentage change = [(2 - 853) / 853] x 100
Subtract the new number by the original number
2 - 853 = -851
-851 ÷ 853 = -0.9976553341148886
-0.9976553341148886 x 100 = -99.77%