Some questions about the field cpu_util_percent in the container_usage file

[WHLOrchid]

Hi, may I ask how cpu_util_percent calculates?Cpu_util_percent is normalized to [0,100], but some invalid values are set to -1 or 101.What value is classified as invalid?What value is assigned to negative 1? What value is assigned to 101?

Thank you very much for your reply.