-90.36% is the change from 923 to 89
Calculation steps:
[( 89 - 923 ) ÷ 923] x 100 = -90.36%
Formula
Percentage change = [(89 - 923) / 923] x 100
Subtract the new number by the original number
89 - 923 = -834
-834 ÷ 923 = -0.9035752979414952
-0.9035752979414952 x 100 = -90.36%