AI Study Pack
percentages
Quantitative AptitudeSSCGraduate Level
AI-generated cheatsheet with key concepts, formulas, and common mistakes — plus audio, MCQs, mind maps & more.
AI-generated
Percentages Cheat Sheet
Key Definitions
- Percentage: A fraction expressed as a part of 100.
- Increase/Decrease: Change in value expressed as a percentage of the original value.
Important Concepts
Calculating Percentages
- To find a percentage of a number:
Percentage = (Part / Whole) × 100
- To find the whole from the part and percentage:
Whole = (Part / Percentage) × 100
Percentage Increase/Decrease
- Increase:
New Value = Original Value × (1 + (Percentage Increase / 100))
- Decrease:
New Value = Original Value × (1 - (Percentage Decrease / 100))
Key Formulas
Percentage Change = ((New Value - Old Value) / Old Value) × 100- New Value: Final amount after change
- Old Value: Initial amount before change
Common Mistakes to Avoid
Common Mistake: Confusing increase with decrease; always check the sign in formulas.
Memory Tricks
Tip: "Part-Whole-100" — Remember that to find a percentage, relate part to whole out of 100.
Key Diagrams
Percentage Calculation:
Part / Whole = Percentage / 100
Increase/Decrease:
Original Value --(Increase)--> New Value
Original Value --(Decrease)--> New Value
This pack also includes
Audio Podcast
5-min summary
10 MCQs
Exam-pattern
Mind Map
Visual connections
Flashcards
Spaced repetition
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