Percentages to prove what, exactly?
First, I'm assuming "growth" is about iPlayer downloads/installations...
If the percentages are showing that fondleslabs are the hot take up item, then it makes sense using those percentages to show that growth, in comparison with other platforms.
To go from that to "fondleslabs are becoming the second TV", however, is a bit strong, isn't it?
Such a claim would make more sense if the figures given were actuals, showing, say, 2.5 million fondleslabs are using iPlayer compared to 35,000 PCs. Then such a claim can be siad to stand up.
Perhaps a new headline for this article would be better: "Parent uses its News agency skills to self-aggrandise by 'getting down with the hip tech'..."