How to do scroll length % visual cue?

Anyone know if this is possible or how to go about doing this?

The UX or visual interaction is to have a loading like bar across 100% of screen that shows the % of scroll the user has gone down the page, giving them a heads up on how much more content they can / need to consume if they want.

I’m sure there is a javascript webflow ninja that knows how to hack this together #mcGyverWhereARTthou

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