Percentages

beginner25 min read

What a percentage is, how it links to fractions and decimals, and how to handle percentage change, successive change and reverse-percentage questions at bank-exam speed.

What you will be able to do

Convert freely between a percentage, a fraction and a decimal.
Apply the percentage-change formula and read it in both directions.
Combine two successive percentage changes into one net change.
Recover an original amount from a figure that already includes a percentage change.

What is inside this lesson

1What a percentage means
2Percentage, fraction and decimal are the same number
3The three relationships you actually use
4Turn an increase or decrease into a single multiplier
5Worked example: a fee concession
6Worked example: successive percentage change
7Common mistakes
8Quick revision
9Practice

The lesson itself is for members

Reading the 9 sections above, the worked examples and the practice set is free — the whole knowledge base is on the free plan, along with flashcards, private notes and Ask Onely.

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