This document describes difference between "Total CPU Utilization" and "perCentCPUUtilization.0".
Total CPU utilization gives the average usage of the busiest CPU on a dual CPU system (e.g. C650, X1050) or the CPU's average usage on single CPU system (all other models).
To monitor overall system usage, the "Total CPU utilization" is the statistic that should be watched.
perCentCPUUtilization shows the total load of the system.