From the article:
These numbers mean the
per capita new infection rate on the Baleares is 5x higher than in the UK and make an excellent case for keeping the travel warning
They also put Balearic Islands almost up to the German threshold for unsafe regions (it is 50 new infections per 100.000 people per week; these 84 deaths projected onto a whole week mean 49 new infections per 100.00 people per week). No idea what people on Mallorca are doing (where the majority of these new infections presumably come from), but they are not doing the right thing
Unless of course that very respectable British newspaper got their numbers wrong...