🧮 General Percentage Calculators
Looking for reliable tools to calculate percentages? This page covers everyday percentage calculators — perfect for school, finance, or everyday life. Whether you’re checking changes, comparing numbers, or calculating growth, these tools are here to help.
Percentage Allocation Calculator
Percentage Error Calculator
Percentage Difference Calculator
What Percentage Is X Of Y
Percent Change Calculator
Percentage Decrease Calculator
Percentage Of A Number Calculator
Percentage Increase Calculator
🔄 Percent Change Calculator
What It Does:
Calculates how much a value has increased or decreased in percentage over time.
Why It’s Useful:
Perfect for tracking stock prices, salary changes, or weight gain/loss.
Formula:
Percent Change = ((New Value – Original Value) / Original Value) × 100
Example:
If your salary increased from R20,000 to R22,000:
((22,000 – 20,000) / 20,000) × 100 = 10% increase
🧩 Percentage Allocation Calculator
What It Does:
Helps you split a total amount based on percentage values.
Why It’s Useful:
Useful for budgeting, splitting profits, or dividing work tasks.
Example:
Split R1,000 between 3 people: 50%, 30%, 20%
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Person A: R500
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Person B: R300
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Person C: R200
🏠 Percentage Calculator — Front Page
What It Does:
A general-purpose calculator for any kind of percentage question.
Why It’s Useful:
Covers everyday needs — sales, test scores, finances, etc.
Includes Questions Like:
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What is 20% of 150?
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30 is what percent of 200?
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80 is 40% of what?
📉 Percentage Decrease Calculator
What It Does:
Finds the drop in value expressed as a percentage.
Why It’s Useful:
Helps in budgeting, sales pricing, or tracking consumption reductions.
Formula:
Percentage Decrease = ((Old Value – New Value) / Old Value) × 100
Example:
Price drops from R500 to R400
((500 – 400) / 500) × 100 = 20% decrease
⚖️ Percentage Difference Calculator
What It Does:
Compares two values by showing the percentage difference between them.
Why It’s Useful:
Good for comparing costs, exam scores, or project metrics.
Formula:
Percentage Difference = (|A – B| / ((A + B)/2)) × 100
Example:
Comparing 60 and 80
(|60 – 80| / (60 + 80)/2) × 100 = 28.57%
❌ Percentage Error Calculator
What It Does:
Shows how far a measured value is from the actual value in percentage terms.
Why It’s Useful:
Common in science experiments and financial forecasting.
Formula:
Percentage Error = (|Measured – Actual| / Actual) × 100
Example:
Estimated R90 but actual is R100
(|90 – 100| / 100) × 100 = 10% error
📈 Percentage Growth Rate Calculator
What It Does:
Measures how fast something is growing over time.
Why It’s Useful:
Used in business, population studies, and data analysis.
Formula:
Growth Rate = ((Final Value – Initial Value) / Initial Value) × 100
Example:
Revenue grew from R10,000 to R12,000
((12,000 – 10,000) / 10,000) × 100 = 20% growth
⬆️ Percentage Increase Calculator
What It Does:
Calculates the increase from one number to another as a percentage.
Why It’s Useful:
Perfect for tracking growth in sales, income, or data.
Formula:
Percentage Increase = ((New Value – Original Value) / Original Value) × 100
Example:
Sales rise from R150 to R180
((180 – 150) / 150) × 100 = 20% increase
🔢 Percentage of a Number Calculator
What It Does:
Finds how much a specific percentage of a number is.
Why It’s Useful:
Helps with budgeting, discounts, or study planning.
Formula:
(Percentage ÷ 100) × Number
Example:
What is 25% of 800?
(25 ÷ 100) × 800 = 200
❓ What Percentage is X of Y Calculator
What It Does:
Finds what percent one number is of another.
Why It’s Useful:
Great for comparisons in scores, expenses, or data analysis.
Formula:
(X ÷ Y) × 100
Example:
What percent is 40 of 200?
(40 ÷ 200) × 100 = 20%
✅ Final Thoughts
Use these general percentage calculators to quickly solve daily math problems with confidence. They’re simple, accurate, and save time. Whether you’re a student, employee, or business owner — mastering percentages helps you make smarter decisions.