I'm Pretty Sure That Chartexpo Has Greater Capabilities Than Google Sheets With Respect To Out Of The Box Charting Abilities, Ie.

Select the added stacked bar chart and press the three dots in the top right corner. But we can't see what your radial chart looks like.

Click On The ‘Edit Chart’ Tab.

Here’s how you can add a 100% stacked bar graph: To post an image here, you need to save it as a file, and then attach it using the paperclip icon, to the right of the post button.