The major difference appears to be the label's use of "salt" rather than "sodium" as in the US.
Using the data from my other comment, and assuming the potassium in the potato chips is also "salt", the 2000 Calories of US potato chips contain 7.25 grams of salt, of which 3.05g is sodium chloride and 4.2g is potassium chloride.
Using the data from my other comment, and assuming the potassium in the potato chips is also "salt", the 2000 Calories of US potato chips contain 7.25 grams of salt, of which 3.05g is sodium chloride and 4.2g is potassium chloride.