CPU Utililization

I wanting to see how much of my CPU capacity is used at certain times. I see the following in one of the reports and believe it contains the info I need but I am not sure how to interpret it.

Command: export TERM=vt100 && sudo /bin/top -b -n1

top - 11:03:26 up 3 days, 19:05, 0 users, load average: 1.21, 0.83, 0.77
Tasks: 192 total, 1 running, 76 sleeping, 0 stopped, 55 zombie
%Cpu0 : 2.1/4.1 6[||| ]
%Cpu1 : 2.6/5.0 8[|||| ]
%Cpu2 : 2.2/5.4 8[|||| ]
%Cpu3 : 2.5/4.6 7[||| ]
GiB Mem : 22.6/0.911 [ ]
GiB Swap: 0.0/0.000 [ ]

Does that mean CPU0 is at roughly 50% usage (2.1/4.1)?

Thx. Adrian
VE7NZ