Ordinary journals don't require high duplicate checking rate, which is generally 20% or 30%. If it is above this range, the paper will not be published in general journals. If it is a core journal, the duplicate checking rate is stricter, generally below 15%. If the duplicate checking rate exceeds 15%, it will be difficult to publish the paper in core journals.
Different journals have different standards for duplicate checking rate of papers. Therefore, before publishing a paper, it is best to know the duplicate checking rate requirements of the journal to avoid being unable to publish because of the high duplicate checking rate.