Clean Machine is Newton's premier house cleaning service. Last year, Clean Machine used 8,870 gallons of soap to clean its customers' homes. This year, the company used 4,435 gallons. What is the percent of decrease in the amount of soap per year?

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.