-99.64% is the change from 842 to 3
Calculation steps:
[( 3 - 842 ) ÷ 842] x 100 = -99.64%
Formula
Percentage change = [(3 - 842) / 842] x 100
Subtract the new number by the original number
3 - 842 = -839
-839 ÷ 842 = -0.996437054631829
-0.996437054631829 x 100 = -99.64%