QS2—Percentages and percentage-point changes

Calculate, use and understand percentages, percentage changes and percentage-point changes.

Use qs2—percentages and percentage-point changes to connect the rule to the data and decision in the question.

This matters because qs2—percentages and percentage-point changes determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply qs2—percentages and percentage-point changes to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: QS2—Percentages and percentage-point changes is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.