Percentage Markup. Percentage markups are important in a variety of settings because they calculate the percent of a value that can be added to the original value. In a retail environment, an item that is purchased for $5.00 with a percentage markup of 25 percent should be sold for $6.25.Sales tax is calculated in a similar way.ercentage markups are used in retail, government and business environments to calculate the percent of a value that will be added to that value. Excel allows you to calculate percent markup values and then add them to your data.
1. Source: www.flickr.com. Amazon is the largest river in the world, the discharge of the river is greater than the next 7 largest rivers mixed except Madeira and Rio Negro are the tributaries of the Amazon.
3 Chang Jiang (Yangtze) River. The Chang Jiang, more commonly known in the Western world as the Yangtze River, is the longest river in China and Asia, and the world's third-largest in length and volume discharge at 870,000 cubic meters or 30 million cubic feet per year.