A supplier can produce a product for $160.

Mark-upis calculated as:

Mark-up %=(ProfitCost)×100\text{Mark-up \%} = \left( \frac{\text{Profit}}{\text{Cost}} \right) \times 100Mark-up %=(CostProfit​)×100

In this case:

Profit = $240 - $160 = $80

Cost = $160

Mark-up = (80 / 160) × 100 =50%

“Understanding mark-up percentages helps in assessing supplier pricing behaviour and negotiating realistic margins.”

(L4M5 Commercial Negotiation, 2nd edition, Section 2.1 - Pricing Models and Profit Margins)