To evaluate the percentage increase or decrease between two numbers, we subtract the old from the new value, divide the result by the old value, and then multiply it by 100. A percentage calculator simplifies these calculations by taking user inputs, applying suitable formulas, and providing instant results., How much is 25% of 30? What is one fourth (1/4) of 30? Use this easy and mobile-friendly calculator to calculate 25 percent of 30, or any other percentage., 25% of 30 is 7.5. To calculate 25 of 30 you just need to multiply the percent value (25) by the quantity (30) then divide the result by one hundred., The answer using our percentage calculator is that 25 percent of 30 is 7.5. Let’s learn how to easily calculate 25% of 30 with a step-by-step explanation. How to calculate what is 25 percent of 30? To find out what 25 percent of 30 is, follow these steps: Convert 25 percent to a decimal: 25% = 0.25; Use the formula: Result = 30 × 0.25 = 7.5, 25 percent of 30 is 7.5. See detailed information with steps. Learn how to calculate percentages with step-by-step solution of example questions., Given: 25 percent of 30 (25% of 30) Convert the given Percent to a decimal number (decimal form): As a decimal number, 25% = 25.0% = 0.25; Multiply 0.25 times the given Number: 0.25 * 30 = 7.5; Therefore, 25% of 30 = 7.5 Note: Alternative computation using the fraction form of 25%. As a fraction in simplest form, 25% =.