-99.88% is the change from 827 to 1
Calculation steps:
[( 1 - 827 ) ÷ 827] x 100 = -99.88%
Formula
Percentage change = [(1 - 827) / 827] x 100
Subtract the new number by the original number
1 - 827 = -826
-826 ÷ 827 = -0.9987908101571947
-0.9987908101571947 x 100 = -99.88%