I do daily 50% on my 150-gallon tank, stocked with one adult male Jag.
I feed in the morning, then right after feeding I vacuum the bare bottom which usually has left order food from the feeding and any poop from the last morning feeding.
My water is free were I live, otherwise I would probably be doing 25% daily, but yes I do 50% (75-gallons) every morning with my coffee.
I can't stand looking at free floating poop on the bare glass bottom, and I would rather remove it with water changes then have the filters suck it up.