Open the Content Details sidebar to view the current stats of your story. Updated with every change you make, it will help you keep track of your story's progress.
Check your content details
Open a story in the editor and click on the words and read time totals to display the sidebar (shown below).
The following stats will then be shown:
Words
Reading time
Paragraphs
Characters
Characters excluding whitespaces
Media
Links
To hide the sidebar, just click on the x located at the upper right.