onto a HubSpot page and retaining the percentage instead of using PX, I'd suggest for you to create a module instead of placing it in the source code of a rich text module.
You can follow through this documentation on how to create custom module and adding the module onto your template: Create and edit modules.
If you're not planning to use this module across all pages that are using this template, you can either:
onto a HubSpot page and retaining the percentage instead of using PX, I'd suggest for you to create a module instead of placing it in the source code of a rich text module.
You can follow through this documentation on how to create custom module and adding the module onto your template: Create and edit modules.
If you're not planning to use this module across all pages that are using this template, you can either: