Percentage Increase and Decrease Word Problems Summary Example Video Lesson Share to Google Classroom Summary Example Video Lesson Share to Google Classroom To find 10%, divide a number by 10. The original mass of chocolate is 200 grams. 200 ÷ 10 = 10 and so 10% of 200 grams in 20 grams. To increase an … Continue reading "Percentage Increase and Decrease Word Problems"