Thanks for sharing, I really think when we share more information, it can be more helpful to others down the line . It can even be helpful to ourselves if we document a health issue from start to finish.
Tracking weight during a health issue, has been important for me.
What antibiotics was your bird started on?
How's your birdie today?
Gram negative bacteria are mostly consider abnormal. I've seen tests results as given positive for, negative none seen, or results given as few/mod/many, and as % like you mentioned.
This links you to a nice avain test explanation, but it's pdf
Understanding Avian Laboratory Tests
https://nilesanimalhospital.com/files/2012/05/Avian-Diagnostic-Testing.pdf