Inflation in items of daily use
This means items of daily use did not experience price increases as much as items that are not of daily use.

Let's say half expenditures are on items of daily use. Then an increase of 2.2 percentage points will make these contribute 1.1 percentage points in total inflation. To make numbers match, the remaining 3.4 percentage points of total inflation must then have been contributed by a 6.8 percentage point price increase in items not of daily use.