Just an addon to this thread as I thought it would suit. (As I often get confused with these 2 terms is Margin Verse Markup.
This is a good definition which cleared it up for me.
How to calculate markup percentage
By definition, the markup percentage calculation is cost X markup percentage, and then add that to the original unit cost to arrive at the sales price.
For example, if a product costs $100, the selling price with a 25% markup would be $125:
Gross Profit Margin = Sales Price - Unit Cost = $125 - $100 = $25.
Markup Percentage = Gross Profit Margin/Unit Cost = $25/$100 = 25%.
Sales Price = Cost X Markup Percentage + Cost = $100 X 25% + $100 = $125.
How to calculate gross margin percentage
Gross margin defined is Gross Profit/Sales Price. In this example, the gross margin is $25. This results in a 20% gross margin percentage:
Gross Margin Percentage = Gross Profit/Sales Price = $25/$125 = 20%.
Not quite the "margin percentage" we were looking for. So, how do we determine the selling price given a desired gross margin? It's all in the inverse…of the gross margin formula, that is. By simply dividing the cost of the product or service by the inverse of the gross margin equation, you will arrive at the selling price needed to achieve the desired gross margin percentage.
For example, if a 25% gross margin percentage is desired, the selling price would be $133.33 and the markup rate would be 33.3%:
Sales Price = Unit Cost/(1 - Gross Margin Percentage) = $100/(1 - .25) = $133.33
Markup Percentage = (Sales Price - Unit Cost)/Unit Cost = ($133.33 - $100)/$100 = 33.3%