Exactly how quiet is 67 ohms of impedance compared to 30 ohms?

I am completely aware that sound and loudness on headphones can usually be subjective and can totally depend on the person and if they have hearing damage or not. But.

My Superlux HD681’s recently broke down and i am looking at getting an AKG K240. Same design, i seem to enjoy it. And 681’s are clones of 240’s afaik. But one of them is 32 ohms and the other is 67.

How much of a difference would that make in Loudness when im playing thru a Laptop’s standard 3.5mm Jack output?

I hope it isnt a stupid and silly question im not too experienced with different headphones etc so i didnt know how different would it be.

Thanks.