Prepare for SAT, ACT, and EST exams with our comprehensive guide to percentage and percentage change. Delve into the fundamentals of percentages, learning to calculate, interpret, and apply percentages in various contexts. Explore the concept of percentage change and its significance in analyzing data and making comparisons over time. Master problem-solving strategies for calculating percentage change and solving percentage-related problems effectively. Discover real-world applications across diverse fields, from finance and economics to science and social studies. Whether you're a student aiming for exam excellence or a professional seeking to enhance quantitative skills, our guide equips you with the knowledge and tools needed to navigate percentages and percentage change with confidence and clarity.