I cant remember exactly but there's a table you can use depending on your height etc i wouldnt evan want to go on the scales now let alone check my bodyfat percentage

I think ive heard somewhere that pro builders are at something like 5% or maybe evan less on the big day but they dehydrate and stuff, Im no expert but i think you'd know when your at your best %

Also muscle weights more then fat so in theory you could put on weight but your % would go down