Calculate the final value after a percentage increase or decrease.
A percentage increase or decrease is a fundamental concept used in many areas, from finance and business to personal budgeting.
Calculating a **percentage increase** involves adding a portion of the original number back to itself. For example, to find a 15% increase of 200, you first calculate 15% of 200 ($$200 \times 0.15 = 30$$). Then, you add that amount to the original number ($$200 + 30 = 230$$). Our tool automates this process for you.
A **percentage decrease** follows the same logic, but in reverse. You calculate the percentage and then subtract it from the original number. For example, to find a 10% decrease of 50, you calculate 10% of 50 ($$50 \times 0.10 = 5$$) and subtract it from the original number ($$50 - 5 = 45$$).
While the math is straightforward, this tool simplifies the process and eliminates the potential for human error, especially when dealing with complex numbers. Whether you're trying to figure out a sales tax, a tip, or the growth of an investment, this calculator provides a quick and accurate answer.