wikiHow Cost Increase Percentage Calculator To calculate the cost increase percentage, you can use the following formula: Cost Increase Percentage = ((New Cost - Old Cost) / Old Cost) × 100% Here are the steps to calculate the cost increase percentage: Determine the old cost: This is the initial or previous cost of an item or service. Determine the new cost: This is the updated or current cost of the same item or service. Calculate the difference between the new and old costs: Subtract the old cost from the new cost. Divide the difference by the old cost. Multiply the result by 100% to express the increase as a percentage. The formula helps you quantify the percentage increase in cost between two values. It provides a measure of the relative change in cost and allows you to understand the percentage difference in terms of the initial cost. It's important to note that if the result of the calculation is positive, it indicates a cost increase. Conversely, if the result is negative, it indicates a cost decrease. Now that you know the steps, you can use the formula to calculate the cost increase percentage for any given situation. Example: Let's say the price of a product was $50 initially (old cost), and it increased to $65 (new cost). Calculate the cost increase percentage. Step 1: Determine the old cost: The old cost of the product is $50. Step 2: Determine the new cost: The new cost of the product is $65. Step 3: Calculate the difference between the new and old costs: Difference = New Cost - Old Cost Difference = $65 - $50 = $15 Step 4: Divide the difference by the old cost: Cost Increase Percentage = (Difference / Old Cost) × 100% Cost Increase Percentage = ($15 / $50) × 100% = 0.3 × 100% = 30% Step 5: Multiply the result by 100% to express the increase as a percentage: The cost of the product has increased by 30%. In this example, the cost increase percentage is 30%, indicating that the price of the product has increased by 30% compared to its initial cost. You can use the same formula and steps to calculate the cost increase percentage for any other scenario by substituting the appropriate values for the old and new costs. Page