Yes, you can remove the sheet password, and you should stop there. Trying to reverse-engineer a password from its hash and salt values is not a practical path forward, and it misunderstands what those values are designed to do.
The user who posted this question is stuck in a familiar bind. A colleague left, the password left with them, and now a workbook holds data that someone needs to access. The instinct to recover the original password is understandable, it feels like the cleanest solution. But hashing with salt is a one-way process by design. The hash value is the output of a mathematical operation that cannot be run backward. The salt is extra randomness added before hashing to ensure that identical passwords produce different hashes. Together, they exist to prevent exactly what this question proposes: turning a stored value back into the password. Even with both pieces in hand, reversing the process would require guessing the password and checking each guess, which is only feasible if the password is short, simple, or already known from a breach. For any reasonably chosen password, that approach fails.
What matters here is the practical outcome. The user already knows how to remove the sheet password, that is the solution. Modern spreadsheet tools, including Excel, do not use hashed passwords for sheet protection in a way that locks the file itself. The protection is lightweight, and there are established methods to clear it without needing the original password. The real loss is not the password; it is the time spent chasing an impossible reconstruction. The better move is to remove the protection, document the new state of the workbook, and implement a password manager or shared credential vault for any future protections. That prevents the same problem from repeating.
Our opinion is plain: do not waste effort on reversing hashes. Use the tools you already have to solve the actual problem. The password is gone, but the data is not. Focus on recovering access, not recovering a string of characters that no longer matters. That is the difference between working smart and working hard.