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Prices rise, populations grow, water gets used up. Percent change compares the change with the starting value. When one change comes after another, the second works on the new value — so +20% then −10% is not +10%.
✓ You passed this lesson’s test.
Start value is 100% — “percent change is always worked out on the value before the change”
Use it for: Price changes, salary rises, population growth, marks going up or down, and data interpretation.
🧮 Check your own sums with the free Percentage calculator — it shows the working.
Check: ₹100 → ₹120 → ₹108: it went up by 8% ✓
▶ Watch it animatedWork it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
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20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 📈 Rise-and-Fall Reader badge when you pass — and a certificate when you finish all 10 lessons of Part 2 · Everyday maths. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
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