i think he intended to make it more clear since Space clearly doesn't have a basic background in CS
The only thing I know how to do tbh is just the quit(); command with the console, so I would consider it something lower than basic.
To get the percentage just do
%num = 0.10;
%num *= %damage;
%damage -= %num;
This will make %damage go down by 10%.
Alright, thanks, but I think I got a good idea that if it's *=0.9, the %damage will have 90% of original damage. Thank you for the simpler way, though!