Apologies for the formatting, I didn’t want to use HTML tables without the ability to preview how the post would display on the site:
8 fl oz meal per the nutrition label and site calls for 1/2 cup of powder = 60g = 270 calories
12 fl oz meal per the nutrition label and site calls for 2/3 cup of powder = 90g* = 400 calories
So right off the bat (2/3)/(1/2) != 90/60 != 400/270
::(1.333, 1.5, 1.48) which may seem small but really highlights the difference when you consider their proportions to one another at greater magnitudes such as the calculated calorie or macro counts using one the alternative ratios.
*The 90g comes from site instructions - nutrition label only states the mass for 1/2 cup. Since it is all the same density this I am not sure why this is not 80g given the volume ratio and defined label provided mass of 1/2 cup.
I am fine to ignore the difference the mass:calorie ratio as it’s close enough for government work, but it is really the mass:volume ratio that is throwing me given that I would much rather measure the powder out by volume to mix. If the listed mass is correct for the 1/2 cup serving then the calorie count for the 2/3 cup serving is off by 40 calories per listed 400 calorie serving. A 10% difference may not seem like much, but for a ~2000 calorie/day diet that is suddenly a 200 calories - which isn’t an insignificant difference IMO.
Or maybe I did something totally wrong ¯\(ツ)/¯ please advise.