Lakshman, There are no hard and fast %age figures available. It all depends on the system load  and configuration at the the time. This document explains PPME and talks about throttle values beginning on page 19 - [URL]
Hi Team,  What is the percentage of system resources utilization for each Powerpath Migration Enabler throttle values.  Thank you Lakshman Rao
What is the percentage of system resources utilization for each PPME throttle 
values