Because the projects are using XAML which is both made of of content and meta data it can be difficult to compare these files.
Studio has built in Workflow / Project File compare capabilities, but this depends on you looking at local copy of the files and/or to version control such as Git.
In Orchestrator you can browser the Tenant / Host Packages and click on the Explore Package button. From there you can click the Compare button and
From here you can compare the dependencies and workflow of packages in your Orchestrator. I’m not fond of the UI for viewing workflows, but it is somewhat functional
My overall suggestion to tackle this if the source is within your control is to ensure that your have controls in place to enforce versioning/branching/tagging / whatever means that you use and perhaps follow it up with an Artifact Repository so you have immutable packages after they are publish which could be take a step further by signing your packages for authenticity. With that it would be easy to compare package builds outside of UiPath Studio/Orchestrator with whatever VCS that you use.