ja, oder "approx."

I personally would not use a tilde to mean "approximately" in official texts but perhaps that is more my personal style and not based on any set rules.

Note that the currency symbol comes before the actual amount in English: €520m

approx. ist viel besser... außerdem 520 mio. €

€520mio

Don't use "mio" for million in English

no Mine, it's "approx. € 520 m" (or million)
thanks for pointing that out, hermaphromoose... and hi, BTW ;-)

pardon me :o)

My British colleagues also write c. as an abbreviation of circa. Would that be OK as well?