I want to count total No of Attend Call. and how much call Successful Contact in a single query

select
 COUNT(*) [total No of Attend Call]
 ,SUM(case when ContactStatus='Successful Contact' then 1 else 0 end)[Successful Contact count]
 ,SUM(case when ContactStatus='Engaged' then 1 else 0 end)[Engaged count]
 ,SUM(case when ContactStatus='Contact Again' then 1 else 0 end)[Contact Again count]
 ,SUM(case when ContactStatus='Disconnected' then 1 else 0 end)[Disconnected count]
 from tableName