# Unveiling the Secrets of Percentage – How Do You Calculate Percentage Increase or Decrease in Excel

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In the vast realm of spreadsheets and data analysis, Excel stands as the undisputed champion, empowering users to navigate through numbers with ease and precision. Whether you’re a seasoned professional or a novice explorer in the world of data, understanding how you calculate percentage increases or decreases in Excel is a fundamental skill that can elevate your spreadsheet prowess.

In this journey of Excel enlightenment, we embark on a step-by-step guide to unravel the mysteries of percentage calculations, ensuring you emerge as a maestro of numerical transformations.

## Understanding the Basics:

Before diving into the intricacies of Excel’s functions, let’s establish a solid foundation. The percentage increase or decrease is a measure of the relative change in a quantity over time. It is expressed as a percentage to provide a clear representation of how much the value has grown or diminished.

### Method 1: Basic Formula Approach

#### Step 1: Identify the Initial and Final Values

Imagine you’re tracking the sales performance of your business. To calculate the percentage increase or decrease, you need to know the initial (old) value and the final (new) value.

#### Step 2: Apply the Formula

For percentage increase:

For percentage decrease:

Example:

Let’s say your initial sales were \$10,000, and they increased to \$15,000. Applying the formula:

### Method 2: Excel Functions – Percentage Increase

Excel provides dedicated functions for percentage calculations, making your life simpler and calculations more accurate.

#### Step 1: Input the Data

In an Excel sheet, designate cells for the old and new values.

#### Step 2: Use the Formula

For percentage increase, the formula is:

=PERCENTAGE.INCREASE(Old Value,New Value)

Example:

In Excel, if your old value is in cell A1 and the new value is in B1, the formula would be:

=PERCENTAGE.INCREASE(A1,B1)

### Method 3: Excel Functions – Percentage Decrease

Similarly, Excel offers a specific function for percentage decrease.

#### Step 1: Input the Data

Designate cells for old and new values.

#### Step 2: Use the Formula

For percentage decrease, the formula is:

=PERCENTAGE.DECREASE(Old Value,New Value)

Example:

If your old value is in cell A1 and the new value is in B1, the formula would be:

=PERCENTAGE.DECREASE(A1,B1)

### Method 4: Excel Formula – Manual Calculation

Excel also allows you to manually craft a formula for percentage change.

#### Step 1: Input the Data

Designate cells for old and new values.

#### Step 2: Craft the Formula

For percentage increase:

For percentage decrease:

Example:

Assuming your old value is in cell A1 and the new value is in B1, the formula for percentage increase would be:

## Conclusion:

Understanding how do you calculate percentage increase or decrease in Excel is an essential skill for anyone working with data. Whether you prefer the simplicity of basic formulas or the efficiency of Excel functions, understanding these methods opens a gateway to a world of accurate and insightful data analysis.

As you embark on your journey through cells and numbers, armed with the knowledge of percentage calculations, you’re well-equipped to navigate the vast landscapes of Excel’s potential. So, dive in, explore, and let your spreadsheets tell the story of transformation and growth!