What should be the keyword density in SEO?

In other words, if a webpage consists of a single, 200-word paragraph, it should contain no more than one keyword. You may be able to “safely” include more keywords than this (i.e. without being penalized by Google), but roughly one keyword per 200 words of copy is considered a good benchmark by the SEO community.

For More Information Please Refer: https://www.wordstream.com/keyword-density