The published band is 3–6% of total revenue. That is the per-order commission rate multiplied by the share of your business that runs through the apps: a fifth of revenue at 25% commission is 5% of everything you sell. Let delivery grow to two-fifths at the same rate and commission alone takes 10% of revenue — more than most operators pay in rent — which is why the mix has to be decided, not defaulted.
From Aggregator Economics 2026: What Delivery Really Costs in the UAE, KSA and India — the full reading, with the method behind this answer.