Profit = Selling Price – Cost Price
Profit Percentage = (Profit / Cost Price) × 100
Profit Percentage = ((Selling Price – Cost Price) / Cost Price) × 100
If Profit is known, use Profit Percentage = (Profit / Cost Price) × 100
If Selling Price and Cost Price are known, subtract Cost Price from Selling Price first
Divide the result by Cost Price
Multiply the result by 100
If the result is positive, it is profit
If the result is negative, it is loss percentage, not profit percentage