Select Profile on the left menu pane. From the drop-down menu, click Edit Profile. You are then brought to My Profile page. At the top-right corner of your profile, click on thePencil_font_awesome.svg.pngicon to edit your profile.

There are three sections. Account, Settings and Personal. Go to Personal and click Change Password. 

Type your current password. Then, type your new password, confirm and save. Click on theicon in order to view your password.