The fall in earnings before interest, tax, depreciation and amortisation comes as the company expects to take restructuring costs of £25m and a new investment charge of £17.5m for the year.
The company said the outlook was bleak and that it is finding it difficult to predict the business outlook with any degree of certainty.
RTL owns UK broadcaster Channel 5 with United Business Media. The Luxembourg-based broadcaster owns 65% of the channel, with United owning the rest.
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