-86.89% is the change from 923 to 121
Calculation steps:
[( 121 - 923 ) ÷ 923] x 100 = -86.89%
Formula
Percentage change = [(121 - 923) / 923] x 100
Subtract the new number by the original number
121 - 923 = -802
-802 ÷ 923 = -0.8689057421451788
-0.8689057421451788 x 100 = -86.89%