What version of Turborepo are you using?

1.2.16

What package manager are you using / does the bug impact?

pnpm

What operating system are you using?

Linux

Describe the Bug

#873 added parsing of --concurrency=50% and the docs still reflect it: https://turborepo.org/docs/reference/command-line-reference#--concurrency

However, current versions of turbo fail with:

 ERROR  invalid argument "50%" for "--concurrency" flag: strconv.ParseInt: parsing "50%": invalid syntax

The breaking change was introduced in v1.2.15.

Expected Behavior

Expected to be able to parse --concurrency=50%

To Reproduce

turbo run build --concurrency=50%