Percentage
Understanding and calculating percentages
Interactive Percentage Visualization
Introduction
A percentage is a way of expressing a number as a fraction of 100. The symbol "%" means "per cent" or "out of 100". Percentages are used extensively in everyday life, from discounts to statistics.
Key Concepts:
- Percentage: A number expressed as a fraction of 100 (e.g., 50% = 50/100 = 0.5)
- Conversion: Percentages can be converted to fractions and decimals
- Finding Percentage: (Part / Total) × 100
- Finding Value: (Percentage / 100) × Total
- Percentage Change: ((New - Original) / Original) × 100
How to Use
- Visual Representation: See percentages as circles, rectangles, or bar charts
- Conversion: Convert between fractions, decimals, and percentages
- Percentage Calculations: Find percentages, values, or totals using different formulas
- Percentage Change: Calculate increases and decreases with visual comparisons
- Adjust the sliders to see how changes affect the calculations and visualizations
- Use the formulas section as a quick reference for percentage calculations
Percentage Information
Percentage: 75%
Fraction: 75/100 = 0.75
Decimal: 0.75
Visual Representation
Percentage Formulas
Find Percentage:
Percentage = (Part ÷ Total) × 100
Find Value:
Value = (Percentage ÷ 100) × Total
Find Total:
Total = (Part ÷ Percentage) × 100
Percentage Increase:
New = Original × (1 + %/100)
Percentage Decrease:
New = Original × (1 - %/100)
Percentage Change:
Change% = ((New - Original) ÷ Original) × 100
Lessons
Individual learning units
Lessons coming soon