Explain the consequences

Once users confirm they are sure they want to leave, be clear about what happens to the account and all the information once the account is deleted. Is all their data permanently deleted? Can they come back and restore their account? Is the deletion immediate, or can they use their account until a specific date?

This is the right time to offer an option to pause their membership so that users can come back and retain their data. You can also briefly explain the benefits of membership, which might stop users from permanently removing their accounts.