Did you notice the target is 75VG/25PG, not 75PG/25VG?first off get a juice calculator - makes everything ez and accurate.
but to make say 24 ml's of juice @ 8mg of NIC .. you would need to use 8 ml's of your 24mg nic and 16 mls of 75/25 pg-vg additionally or another way to say would be to add 12ml's of pg and 4 ml's of vg (=16ml's)
or more simply - to cut your nic to 1/3 the orginal level - add 2/3's the original volume of the base in the same ratio.
Did you notice the target is 75VG/25PG, not 75PG/25VG?
Agreed on using a juice calculator. I'd just use the 24 mg/ml Nicotine base as is and plug the according recipe in the calculator, e. g. http://e-liquid-recipes.com/createmath - do not attempt this while sleepy or taking medication - lol
yep yep juice calc!!
Post edited due to my attention deficit ;p