Encrypted SHA256 Hash with SALT - Decrypting

I have a site where almost everything uses SHA256 Hash encryption and the hashes are stored in a database table, I want to allow the user to see their password in its decrypted state. Under Server Connect > Cryptographic > I see Decrypt with Password and Decode Base64 only.

How do I decrypt a SHA256 Hash from the Hash and knowing the SALT?

I assume if there is no way of doing this then I have to rather just allow the user to reset their password rather than decrypting it, please can someone just confirm this though.