-9.51% is the change from 999 to 904
Calculation steps:
[( 904 - 999 ) ÷ 999] x 100 = -9.51%
Formula
Percentage change = [(904 - 999) / 999] x 100
Subtract the new number by the original number
904 - 999 = -95
-95 ÷ 999 = -0.09509509509509509
-0.09509509509509509 x 100 = -9.51%