Original Before Decrease Calculator - Find Original Amount Before Percentage Decrease

How to Use

• Enter the percentage decrease into the first input field.
• Enter the new value (after decrease) into the second input field.
• Optionally, check the "Round" box to round the result to two decimal places.
• The calculated original value is shown instantly as you type.
• Click "Add to Memos" or press Enter to save your calculation.

How It Works

The Original Before Decrease calculator uses this formula:

For example, to find the original value when the new value is $950 after a 5% decrease, the calculator computes:

So the original value was $1,000.

Important Note

When the decrease percentage is 100%, the calculation is undefined because you cannot divide by zero. The calculator will show an error message in this case.

Practical Examples

• Reverse Price Calculation: If an item costs $95 after a 5% discount, the original price was $100.
• Original Salary Analysis: If a reduced salary is $46,000 after a 8% cut, the original salary was $50,000.
• Investment Principal: If an investment is worth $1,760 after a 12% loss, the original investment was $2,000.
• Pre-Decline Population: If a city has 97,000 people after a 3% decline, the original population was 100,000.
• Original Expense: If expenses are now $930 after a 7% reduction, the original expenses were $1,000.
• Base Budget: If a budget is $3,750 after a 25% decrease, the original budget was $5,000.