Hi vamsidhar,
can you share the screenshot for this snapshot, only for check if i understand correctly :)
generally, in Snapshots, the "% time" is about time spent in one snapshot.
i.e:
I have one bt that response time is 4 sec. In this snapshot I can see 1 call (downstram) with 2 sec totally. So, this call spend 50% of all bt response time.
Please let me know if I understand you correctly!
Regards