**Four Easy Ways to Calculate Percentages | wikiHow**
https://www.wikihow.com/Calculate-Percentages

Jan 11, 2023 · Calculate the total cost with sales tax. To calculate the cost of an item plus tax, start by converting the sales tax to a decimal. Next, add that number to 1 (think of 1 as 100% of the cost of the original item). For example, if sales tax is 8%, you’d do 0.08 + 1 = 1.08. Then, multiply the price of your item by 1.08. Views: 8.3M

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