Last October, Astra also said it planned to invest $200m in a new Chinese factory making intravenous and oral solid medicines.
Astra’s sales in emerging markets, including China, grew 10pc to $5.8bn last year, while Glaxo’s Asia Pacific revenues grew 7pc to ?1.8bn.
It's clear in that context that pc=%.
However, because of the possibility of being misunderstood, you would be wise not to use it yourself.
There's an interesting discussion of this topic here.