How many moderate plagarism to safe indexing on Google?

Dear All..

I have a lot articles from someone but after I checked it's 100 percents full plagarism..
I checked with online grammar and there are a lot error,
After I Fixed....I tried check again and then the plagarism about 70 percents..

so how many actually moderate plagarism to safe indexing on google nowadays based on your experience?

I will using the website for affiliate not for adsense..


Thank u so much for your sharing

I'd not use them if they are less than 80-85% unique. But that's me, I am sure other people have higher standards

And even then (at 85% unique) I would still keep my main articles (the one that I want to rank high in google) at 95-100%, so....

used/indexed articles are really worthless,
fixing a couple of grammar mistakes won't make it better even if you get a better score with some tool,

You shouldn't really bother using such articles as they get you more trouble than results,
this include not ranking (in most of the case, works sometimes for somehow), can negatively affect your website, DMCA claims or even getting sued

Overall, if you really want to have decent content, you should aim for 90-95% unique at least,
You can use a couple of copied paragraphs if they do provide the necessary value
Other than that, it's just a random gamble that won't guarantee anything, especially for the long run