What percentage of the content on a site must be unique to remove the Google filter for non-unique content?

Question

Search Engine Optimization

Now the site has about 100 pages with non-unique content, and this is about 70% of all content. So, most likely, a Google filter for non-unique content is imposed on it. Will Google remove this filter without removing non-unique content (too many links to these materials, which then turn out to be dead and as a result can become even worse)? For example, how much unique material should appear on the site in order to remove this filter?

Answer 1

100%
more difficult, the label "AGS site or author's" is glued according to a bunch of parameters, including for rewriting

Answer 2

Good afternoon. Google doesn't have any filters.
It will be much clearer if you describe the essence of the problem more precisely.