-99% is the change from 904 to 9
Calculation steps:
[( 9 - 904 ) ÷ 904] x 100 = -99%
Formula
Percentage change = [(9 - 904) / 904] x 100
Subtract the new number by the original number
9 - 904 = -895
-895 ÷ 904 = -0.9900442477876106
-0.9900442477876106 x 100 = -99%