In contemporary English usage, @ is a commercial symbol, meaning at and at the rate of or at the price of.

How do you call @?

Dear Fellow Learners: In English, the symbol @ is called the "at mark" or "commercial at."

What is the name of this symbol @?

Officially, this symbol is called commercial at. Unofficially, most people seem to refer to it as the at sign or just at. Recently, there has also been a movement to call it the atmark. There are also numerous nicknames for it, including snail, curl, strudel, whorl, and whirlpool.