How does one unlike a fb page?

[Tuhin]

You can unlike a Page by taking the following steps:
Find the post in your profile (timeline) that states you like the Page or find a post from the Page in your news feed.
Click the "x" located in the top right hand side of the post.
From the drop-down menu, click "Unlike Page."

You can also navigate to the Page by entering its name into the search bar in the upper right corner, and click the "Unlike" link located on the lower left hand side of the screen.