-99.76% is the change from 843 to 2
Calculation steps:
[( 2 - 843 ) ÷ 843] x 100 = -99.76%
Formula
Percentage change = [(2 - 843) / 843] x 100
Subtract the new number by the original number
2 - 843 = -841
-841 ÷ 843 = -0.9976275207591934
-0.9976275207591934 x 100 = -99.76%