Although there are some blocks of HTML / JScript which can be copied over, you’re right that this one is a little more complex and would need a plugin.
Without coding knowledge you might have to bring someone on board to help you build that, unless you fancy the challenge - but I personally found that learning curve pretty steep! So before you dive into either trying to learn to do that, or paying someone to do it, maybe consider what the ‘off the shelf’ alternatives look like first.
Alternatives
@blueback09 did a great piece of work with progress bars here - worth a look
I posted this example today, built using the amCharts plugin - it’s a donut style chart that could easily be used to represent x% out of 100%.
Good luck