This read-only integer reports the percentage utilization of the IMA port in the egress (outgoing, switch-to-network) direction, again scaled 0-1000 to reflect possible oversubscription. Administrators use this counterpart to the ingress utilization figure to see whether outbound traffic toward the far end is straining the IMA group's combined link capacity. For example, if imaPortEgrPercentUtil stays near 1000 while imaPortIngrPercentUtil is low, the admin would know congestion is specifically on the outbound path toward the remote IMA endpoint.