Note that changing your password is different from resetting your password. To change your password, you have to be able to remember your present password but you only reset your password when you have forgotten the present password which is done at the login page. A reset code will be sent to your registered email to reset it but to change your password, here are the steps to follow;
Login to your Facebook account most preferable from a mobile app on your mobile device
At the homepage, click on the arrow facing down at the top corner
From the drop-down options, click on settings
Click on edit just in front of the password
Then you will be required to input your present password before inputting a new password (note that Facebook password is case sensitive and it is good to use a combination of letter, digit and symbols to form a strong password)
Click on confirm, then your password will be changed to the new one.
Note that Facebook will log out all other third party applications connected to it after changing your password, so you have to re-login whenever you open the application.
I hope reading this article has helped you change your password, if so, share with friends to teach them how to change their password with ease