-99.76% is the change from 839 to 2
Calculation steps:
[( 2 - 839 ) ÷ 839] x 100 = -99.76%
Formula
Percentage change = [(2 - 839) / 839] x 100
Subtract the new number by the original number
2 - 839 = -837
-837 ÷ 839 = -0.9976162097735399
-0.9976162097735399 x 100 = -99.76%