Pet Wombat Your country isn't covered yet, so these are EU prices.
A wombat looking over the top edge of the page

Hill's Science Plan Adult Cat Chicken 1.5 kg

In Dry cat food.

4,161 kcal per kg and 31.9% protein, from Hill's page. That's 4.9 points more protein than Royal Canin Indoor 27 Adult Dry Cat Food.

What the label and listing say

SpeciesCat
Life stageAdult
Pack weight1.5 kg
Energy4,161 kcal/kg (Stated by hillspet.co.uk)
Protein31.9 %
Fat19.7 %
Fibre1.4 %

Where this came from

Other dry cat food