binary representation of 404 = 00000001 10010100
Hence this is 2 byte representation of 404.
Hence while computing from backwards,
1st 8 byte's value is 148 (22+24+27) in decimal and next 8 byte's value is 1. (here is your decimal representation : 148 1)
Same method for hex value also. from backwards, 1st 8 byte's hex value is 94 (you can directly find (148)10 = (94)16 )
and similarly next 8 byte's hex value is 01. (hex representation starts with 0x : ans = 0x94 0x01)
To know more about it how it will be stored into memory check answer of this Question : https://gateoverflow.in/173156/%23pointers