LONDON, Aug 7 (Reuters) - British ad group WPP on Wednesday agreed to sell its controlling stake in FGS Global to minority shareholder KKR for $775 million, implying an enterprise value for the financial PR agency of $1.7 billion.

WPP, which also downgraded its 2024 guidance on Wednesday, said it would use the proceeds to reduce its debt.

(Reporting by Paul Sandle; Editing by Alistair Smout)