# Program to find the percentage of difference between two numbers

Given two numbers a and b, where ‘b’ is incremented or decremented by some percentage of ‘a’. The task is to find out that percentage.

Examples:

```Input: a = 20, b = 25
Output: 25%
Difference between 20 and 25 is 5,
which is 25 % of 20.

Input: a = 25, b = 20
Output: -20%
```

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Formula to calculate percentage:

(Percentage2 – Percentage1) * 100 / (Percentage1)

## C++

 `// C++ program to calculate the percentage ` `#include ` `using` `namespace` `std; ` ` `  `// Function to calculate the percentage ` `int` `percent(``int` `a, ``int` `b) ` `{ ` `    ``float` `result = 0; ` `    ``result = ((b - a) * 100) / a; ` ` `  `    ``return` `result; ` `} ` ` `  `// Driver Code. ` `int` `main() ` `{ ` `    ``int` `a = 20, b = 25; ` ` `  `    ``cout << percent(a, b) << ``"%"``; ` ` `  `    ``return` `0; ` `} `

## Java

 `// Java program to calculate ` `// the percentage ` `class` `GFG ` `{ ` `     `  `// Function to calculate the percentage ` `static` `int` `percent(``int` `a, ``int` `b) ` `{ ` `    ``float` `result = ``0``; ` `    ``result = ((b - a) * ``100``) / a; ` ` `  `    ``return` `(``int``)result; ` `} ` ` `  `// Driver Code ` `public` `static` `void` `main(String[] args) ` `{ ` `    ``int` `a = ``20``, b = ``25``; ` ` `  `    ``System.out.println(percent(a, b) + ``"%"``); ` `} ` `} ` ` `  `// This code is contributed by mits `

## Python 3

 `# Python 3 program to calculate  ` `# the percentage ` ` `  `# Function to calculate the percentage ` `def` `percent(a, b) : ` ` `  `    ``result ``=` `int``(((b ``-` `a) ``*` `100``) ``/` `a) ` ` `  `    ``return` `result ` ` `  `# Driver code ` `if` `__name__ ``=``=` `"__main__"` `: ` ` `  `    ``a, b ``=` `20``, ``25` ` `  `    ``# Function calling ` `    ``print``(percent(a, b), ``"%"``) ` `             `  `# This code is contributed by ANKITRAI1 `

## C#

 `// C# program to calculate ` `// the percentage ` `class` `GFG ` `{ ` `     `  `// Function to calculate the percentage ` `static` `int` `percent(``int` `a, ``int` `b) ` `{ ` `    ``float` `result = 0; ` `    ``result = ((b - a) * 100) / a; ` ` `  `    ``return` `(``int``)result; ` `} ` ` `  `// Driver Code ` `static` `void` `Main() ` `{ ` `    ``int` `a = 20, b = 25; ` ` `  `    ``System.Console.WriteLine(percent(a, b) + ``"%"``); ` `} ` `} ` ` `  `// This code is contributed by mits `

## PHP

 ` `

Output:

```25%
```

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Improved By : Mithun Kumar, AnkitRai01