Plug-in configuration for example job:

Thresholds for build result
unstable: 50.0
stable: 75.0
Checked "Use thresholds for critical tests only"

An example result is:

• Pass ratio (Critical tests): 98.9%
• Pass ratio (All tests): 92.7%
• Tests passed (Critical tests): 89/90
• Tests passed (All tests): 89/96
  This build is marked failed but I would expect to be marked as stable.