Permalink change

Hi,
For some reasons I will need to change permalinks for some of my posts. What is the best way to do it without losing the existing SEO (links)?

Thanks!

 

Here is a good article on the topic: http://www.wpexplorer.com/change-permalinks-wordpress/

301 redirect the old URLs to the new URLs to retain the link juice.

 

you will get the option to change permalinks URL below the post Title.