-99.26% is the change from 816 to 6
Calculation steps:
[( 6 - 816 ) ÷ 816] x 100 = -99.26%
Formula
Percentage change = [(6 - 816) / 816] x 100
Subtract the new number by the original number
6 - 816 = -810
-810 ÷ 816 = -0.9926470588235294
-0.9926470588235294 x 100 = -99.26%