Sometimes just changing (or not changing) a key result doesn't tell the whole story. Provide your team additional context as to the progress of the key result, any blockers, or just let them know that you are working on it despite not changing the numbers.
Steps
Find Objective
Click Add a comment. Here you can @mention, include hyperlinks, or just add text.
Also have the option to comment on an update to the progress/status
Enter comment. Click on the Checkmark
Edit a Description
Click on the three dots at the end of the comment
Click Edit description. Make any edits
Press the checkmark to confirm