* Significant influence: French has had a very significant influence on the English language. This is largely due to the Norman conquest of England in 1066.
* No precise number: There's no easy way to calculate a precise percentage, as the evolution of language is complex. Many words have multiple origins, and some French words have changed so much they are hard to trace.
* Estimates: Some estimates suggest that around 30% of English vocabulary comes from French. However, this is just a rough approximation.
* Higher percentage of formal words: French influence is more pronounced in formal vocabulary, like legal terms, government, and academic words.
So, while there's no definitive answer, French has undoubtedly contributed a substantial portion of the English language, significantly impacting its vocabulary and overall structure.