A start-up firm's sales increased by 350% from its first year of operation to its third year total of $1.68 million. What were its total sales in its first year of operation?
Percentage - The price of a cup of coffee was $2.35 yesterday. Today, the price fell to $2.10. Find the percentage decrease. Round your answer to the nearest tenth of a percent.
Percentage Decrease - The price of a gallon of 87 octane has dropped to $2.81 today. Yesterday the price was $2.86. Find the percentage decrease. Round to the nearest 10th of a percent.