SQL Server DMV collects data on an interval,sys.dm_os_ring_buffers provided cpu utilzation percentage by SQL Server.exe and other processes.

select top 1 record_id,SQLProcessUtilization,SystemIdle,
100 - SystemIdle - SQLProcessUtilization as OtherProcessUtilization
from (
select
record.value('(./Record/@id)[1]', 'int') as record_id,
record.value('(./Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') as SystemIdle,
record.value('(./Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]', 'int') as SQLProcessUtilization,
timestamp
from (
select timestamp, convert(xml, record) as record
from sys.dm_os_ring_buffers
where ring_buffer_type = N'RING_BUFFER_SCHEDULER_MONITOR'
and record like '%<SystemHealth>%') as x
) as y
order by record_id desc

 

record_id	SQLProcessUtilization	SystemIdle	OtherProcessUtilization
46895	0%	92%	8%