How do i get my cat to eat hilife wet food (more info inside)?

He will eat Whiskas, felix, sheba and iams (loves iams) but i really want him to eat hilife because they boast to having 60% & 70% real meat in there products. Out of everything i've tried him one he won't eat this, he will eat about less than half of a 100g packet and when i give him the rest latter on in the day or evening he won't touch it. He has done this with every one i have given him. I want to give him this product because it is affordable and has the high meat percentage. He is half way through the box now any suggestions on how i can get him to eat it or should i admit defeat?