-88.29% is the change from 999 to 117
Calculation steps:
[( 117 - 999 ) ÷ 999] x 100 = -88.29%
Formula
Percentage change = [(117 - 999) / 999] x 100
Subtract the new number by the original number
117 - 999 = -882
-882 ÷ 999 = -0.8828828828828829
-0.8828828828828829 x 100 = -88.29%