-14.81% is the change from 999 to 851
Calculation steps:
[( 851 - 999 ) ÷ 999] x 100 = -14.81%
Formula
Percentage change = [(851 - 999) / 999] x 100
Subtract the new number by the original number
851 - 999 = -148
-148 ÷ 999 = -0.14814814814814814
-0.14814814814814814 x 100 = -14.81%