Step #1 First of all visit to the official Facebook hacked account website: https://www.facebook.com/hacked
then click on the option of "My Account is Compromised".
Then in next tab type in your email address or Login name or Full Name or your specified Phone No.
but if you still not able to find your account on Facebook then try type in for more specific something.
Step #2 The Real Process to recover your account is starts here, here you have to put in your account password, well not the real because, if you were knew the Facebook password, so you will not be here, try putting your old password.
Step #3 Now Choose the option of "Reset My Password Button".
Step #4 Obviously if you are hacked by someone, so the hacker have changed your password, so now you have to press the button of "no longer have access to these".
Step #5 Now in this step put the new password and confirm it.