-28.83% is the change from 999 to 711
Calculation steps:
[( 711 - 999 ) ÷ 999] x 100 = -28.83%
Formula
Percentage change = [(711 - 999) / 999] x 100
Subtract the new number by the original number
711 - 999 = -288
-288 ÷ 999 = -0.2882882882882883
-0.2882882882882883 x 100 = -28.83%