How to make a regular expression for digits, % and dashes?

Question

HTML

I am not strong in this direction, so I turn to you. I need a regular expression to enter numbers% -
something like this: (15% -10% -1%) in this format:
pattern="^[_A-z0-9]{1,}$"

Answer 1

If I understand correctly, then you need this?
or ^[\d\-%]+$
https://regex101.com/r/MIa0AE/1