Understanding load average vs. cpu usage [closed]
top shows CPU utilization for running processes while load average shows (since 1993) number of running processes plus number of processes in the uninterruptible state. Processes waiting for work do not consume CPU. As a result top CPU utilization is less that 7/8 * 100%.
Source: http://www.brendangregg.com/blog/2017-08-08/linux-load-averages.html