Guild Wars 2

RT = Reward Track in this case.
https://wiki.guildwars2.com/wiki/Potion_of_PvP_Reward

The wiki says 1 will give us 1.25% overall progress of that reward track.
So, that means drinking 80 will get us 100% (In theory)
However, does it work like that in practice?

Like, lets say that I wanted to get the balthasar back-piece skin.
I just drink 80 of the pvp potion and viola?
(Just needed the confirmation)

yes it is like that (1 track=80potions)

I got 200+ of thoise potions (no i’m not gonna tes it for you :p )

I used some a while ago, and yes it was approximately 80 for a whole reward track.