How to calculate the percentage of a number in python ? Let’s check it out

How to Calculate the Percentage of a Number in Python

Calculating the percentage of a number is a common mathematical operation. In Python, this can be done easily using basic arithmetic operations. This guide will walk you through the steps to calculate the percentage of a number and provide example code snippets.

Understanding Percentage Calculation

To calculate the percentage of a number, you use the formula:

Percentage=(PartWhole)×100\text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100Percentage=(WholePart​)×100

Where:

• Part is the portion of the whole you are interested in.
• Whole is the total amount.
• Percentage is the result you want to find.

Steps to Calculate Percentage in Python

1. Input the Values: Start by defining the part and the whole values.
2. Apply the Formula: Use the percentage formula to calculate the result.
3. Display the Result: Print the result to the user.

Example Code Snippet

Let’s consider an example where we want to find what percentage 50 is of 200.

Basic Percentage Calculation

1. Define the part and whole values:
   • Part: 50
   • Whole: 200
2. Calculate the percentage:
   • Use the formula: (part / whole) * 100
3. Display the result:
   • 50 is 25% of 200

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Example with User Input

1. Get user input for part and whole values:
   • Enter the part value: [User enters value]
   • Enter the whole value: [User enters value]
2. Calculate the percentage:
   • Use the formula: (part / whole) * 100
3. Display the result:
   • If part = 50 and whole = 200, then 50 is 25% of 200

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Handling Edge Cases

1. Get user input for part and whole values:
   • Enter the part value: [User enters value]
   • Enter the whole value: [User enters value]
2. Check if the whole value is zero:
   • If whole = 0, display: “The whole value cannot be zero.”
3. If the whole value is not zero:
   • Calculate the percentage using the formula: (part / whole) * 100
   • Display the result: If part = 50 and whole = 200, then 50 is 25% of 200

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Useful Links for Percentage Calculations and Python Programming

1. Basic Arithmetic in Python
   • W3Schools – Python Arithmetic
2. Input and Output in Python
   • Real Python – Python Input and Output
3. Python Data Types
   • W3Schools – Python Data Types
4. Python Operators
   • Python.org – Operators
5. Python Division by Zero Handling
   • GeeksforGeeks – Handling Division by Zero in Python
6. Python String Formatting
   • Real Python – Python String Formatting
7. Python Programming Guide
   • Python.org – Beginner’s Guide to Python
8. Python Built-in Functions
   • W3Schools – Python Built-in Functions
9. Python Interactive Shell
   • TutorialsPoint – Python Interactive Shell
10. Python for Beginners
    • Real Python – Python for Beginners

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