How to set image width as a percentage in TinyMCE editor?

Question

Images

Good day, colleagues!

Since in the documentation for the TinyMCE editor I didn’t find how to set the image size in percent, but it cuts itself off, but what’s there, generally removes the set size in percent, but just a number (as I understand it) automatically determines the size in pixels, I ask the following question.

The question is how to set the width or height of the loaded image in the TinyMCE editor, what needs to be written in order for this feature to appear?