To Turn off-Facebook activity you should follow:
In New Facebook
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Click in the top right.
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Select Settings & Privacy > Settings.
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Click Your Facebook Information at the left column.
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Click Off-Facebook Activity to review.
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From here, you can also click Manage Your Off-Facebook Activity for more information.
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You'll be asked to re-enter your password.
In Classic Facebook
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Click at the top right of Facebook and click Settings.
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Click Your Facebook Information at the left column.
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Click Off-Facebook Activity to review.
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From here, you can also click Manage Your Off-Facebook Activity for more information.
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You'll be asked to re-enter your password.
Source: https://www.facebook.com/help/2207256696182627?helpref=faq_content