The phrase "few percentage points" means a small amount or difference, usually less than 5%, when comparing two quantities or measurements. Full definition
You can mess your picture up in a hurry with these fine settings, but they're also the path to the last few percentage points of image accuracy. (techhive.com)
You don't want investors who would call you each time the market is down few percentage points. (safalniveshak.com)
Most people are good for the first few percentage points of decrease. (maximizeyourmoney.com)