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Signaling Speed of link =64000 Bits/sec
Received octets =4946580
Transmitted octets = 5462215
Which ever is higher (transmitted or received ) will be consideration for calculation
SS7 Traffic in the busy hour = 5462215 octets/hour
SS7 Traffic in seconds =5462215/3600=1517.28 octets/second
SS7 Traffic in terms of Erlang =1517*8/64000 =0.189 Erlangs
Utilization =0.189/0.4*100=47.25