A percentage point is a unit used to express the difference between two percentages. For example, if the approval rating of a politician increases from 40% to 50%, it has risen by 10 percentage points. This term helps clarify changes in rates or proportions without confusion, as it specifies the absolute difference rather than a relative change. Percentage points are particularly useful in fields like economics, polling, and statistics. They allow for clear communication of changes in data, such as shifts in interest rates or survey results. Understanding percentage points helps in accurately interpreting and comparing statistical information.