The fault goes deeper; they say X percent less counted in percentage points of the compared thing and not the baseline. If you then have multiple rows, the usel

The fault goes deeper; they say X percent less counted in percentage points of the compared thing and not the baseline. If you then have multiple rows, the uselessness becomes evident. Is it some cultural or linguistical thing where it always has to be X amount more or less and never "Y% of"?