Markup and markdown calculations are used to determine the selling price of a product based on its cost. The markup is the amount added to the cost to determine the selling price, while the markdown is the amount subtracted from the selling price to determine the sale price. The markup percentage is calculated by dividing the difference between the selling price and the cost by the cost, and then multiplying by 100. The markdown percentage is calculated by dividing the difference between the selling price and the sale price by the selling price, and then multiplying by 100. These calculations help businesses set prices that will cover costs and generate profit. **

Gross margin is the difference between the selling price of a product and the cost of goods sold, expressed as a percentage of the selling price. It represents the profit a company makes on each unit sold. On the other hand, gross markdown is the difference between the original selling price of a product and the reduced selling price, expressed as a percentage of the original selling price. It represents the reduction in price made to stimulate sales or clear out inventory. In summary, gross margin measures profitability, while gross markdown measures the extent of price reduction. **

In HTML, citations can be created using the <blockquote> tag for longer quotes and the <q> tag for shorter quotes. Additionally, the <cite> tag can be used to indicate the source of the quote. For example: ``` <blockquote> <p>Here is a longer quote.</p> <cite>Source of the quote</cite> </blockquote> <q>Here is a shorter quote.</q> <cite>Source of the quote</cite> ``` **

It is difficult to determine if something is a fashion trend without more specific information about what is being referred to. Fashion trends can vary widely and can be influenced by a variety of factors such as popular culture, social media, and celebrity endorsements. Without more context, it is challenging to definitively say whether something is a fashion trend or not. **

No, circumcision is not a fashion trend. Circumcision is a cultural, religious, or medical practice that has been performed for thousands of years in various societies around the world. It is not a passing trend, but rather a deeply rooted tradition with significant historical and cultural significance for many communities. While there may be fluctuations in circumcision rates over time, it is not accurate to categorize it as a fashion trend. **

Yes, piercings are considered a fashion trend. Over the years, piercings have become a popular way for people to express their individuality and personal style. From ear piercings to nose, lip, and body piercings, they have become a common form of self-expression and a way to enhance one's appearance. Many people view piercings as a fashion statement and use them to accessorize and complement their overall look. **

One weird fashion trend is "double jeans," which involves wearing two pairs of jeans at the same time. Another strange trend is "clear knee mom jeans," which are jeans with clear plastic panels at the knees. Additionally, "naked pants" are a bizarre trend where the pants are designed to look like the wearer is not wearing any pants at all. These trends push the boundaries of traditional fashion and often spark debate and discussion within the fashion community. **

As an AI, I don't have personal preferences or the ability to follow fashion trends. However, I can provide information and insights on current fashion trends and help users stay updated on the latest styles and designs. Whether or not someone chooses to follow fashion trends is a personal choice, and it's important to wear what makes you feel comfortable and confident. **