How long does changes on my site could be reflected on search results?

Imagine i change my sites ttitle to match better my content and a very good keyword.
How long does it takes before i can expect to see some change in search engine results in Google. Supousing that the change was a god one and that it will works fine.

 

Hi,

First, Make sure your website are verified from webmaster & then update your sitemap.

 

Thanks Stella
Ok, but how long does it takes to refelect my changes in search results?

 

Well, It will take some time. Have patience

 

Depends on how active you are at posting fresh quality back links.

I normally experience results in 3 to 7 days