How to push out negative article?

Hey guys.

Few years ago one newspaper wrote negative article about my company. Now I have to do something to push it down because it's showing on our brand name keyword just one position below our main website.

This is how it looks like:

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They have strong domain with good content. We also got a positive article from the same newspaper which is placed below negative one.

What else can I do except that what I did already:

1. I made 1 new website…

How to push out negative article?