Percentage means nothing. Look at mg per oz or mL.

https://www.coca-cola.com/us/en/brands/coca-cola/products/or...

For a 20oz (591mL) regular US Coke it's 75mg of sodium. A Mexican Coke is 355mL and has 85mg of sodium. A US 20oz has more coke and less sodium.

Percentage means everything, I'm assuming the serving size is identical (as one normally does when comparing these sorts of things in the context that we are).

Your point is that US products are larger, which is generally true, and people typically consume an entire product at once, thus getting more total sugar (and water).

Percentage means everything, and yet here we have two things which obviously have different sodium content per mL and yet have the same %DV.

The percentage DV isn't telling you how much of the food is sodium, it's some reference to some "ideal" diet and food intake.

If the percentage of the drink was the same, the larger serving would have a higher amount in milligrams. But despite being almost 240mL more it has fewer total milligrams of sodium! .13mg/mL (US), the other is .24mg/mL(MX).

Is .24 == .13? Which is a bigger number?

So repeat after me, the %DV is meaningless. It's not telling you what you think it is.

Duh. Yes. I'm so accustomed to working with % solutions (weight by volume) I forgot nutrition labels give %DV.

Comparing, my costco mexican coke = 85mg sodium in 355mL, my gas station coke = 75mg in 591mL.

No worries. Just a daily reminder to always double check the units in the specs! :D

Wait, what, you think the percentage is the percentage of the product that's sodium? No. You didn't notice that one product is 240 calories and one product is 150 calories?

I forgot that nutrition labels are % daily, not % w/v.