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Entrance & Admission Tests
Read a percentage change carefully
A percentage change uses the original quantity as the base. Percentage increase = increase divided by original value, multiplied by 100.
Worked example
A price rises from ₹80 to ₹100. The increase is ₹20; 20/80 × 100 = 25%. The base is ₹80.
Try it yourself
What is the percentage decrease from ₹100 back to ₹80?
Reveal the answer and reasoning
20%. The decrease is ₹20 on a base of ₹100. Equal absolute changes need not have equal percentage changes.
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