-16.42% is the change from 999 to 835
Calculation steps:
[( 835 - 999 ) ÷ 999] x 100 = -16.42%
Formula
Percentage change = [(835 - 999) / 999] x 100
Subtract the new number by the original number
835 - 999 = -164
-164 ÷ 999 = -0.16416416416416416
-0.16416416416416416 x 100 = -16.42%