renumbering files

[mr_purr]

I have files that are numbered like (1) (10) (100) in that pattern and I want to rename them to 001 010 100. What would be the easiest way

Thanks

[Luuk]

This can depend on where the (numbers) is located, and also if multiple (numbers) should also be changed?

[mr_purr]

The files look like this
xxxxxxxx xxx xx (1).jpg
where the numbers are from 1 to at least 100, I know how to get rid of the () all ready

[Luuk]

Is space to always be the separator for (numbers) at the end?? And should they be changing like?...
Name (1).txt =====> Name-001.txt
Name-(10).txt ====> Name-010.txt
Name_(100).txt ===> Name-100.txt

If the answers is being yes? then Regex(1) can use a checkmark in "v2", with a "Match" and "Replace" like...
[- _]?\((\d+)\)$(?X):0+(?=\d{3,})
:000000000$1(?X)-

Can increase "3" up to "9 " for more padding (or add more zeroes in the bottom for 10-or-more).
Can omit or change the "-" to change your preferred separator.

[mr_purr]

Thanks that worked.