How do I deobfuscate this PowerShell script?

We were attacked by what we think would have been some sort of ransomware (ThreatLocker stopped it so it was unsuccessful) and we want to look through the PowerShell script they tried to use but it is obfuscated using char codes and almost all of them use subtraction to calculate the char code. What is the best way to go about deobfuscating this?

The script can be found at [https://techty.tech/h.txt](https://techty.tech/h.txt) (This is hosted on my homelab webserver because the original …

cybersecurity powershell powershell script script