percent-increase-mathhelpcom-pre-algebra-help

# Interactive video lesson plan for: Percent Increase - MathHelp.com - Pre Algebra Help

#### Activity overview:

For a complete lesson on percent increase, go to http://www.MathHelp.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to find the percent increase or percent decrease between two numbers, using the following formula: amount of change/ original number. For example, to find the percent decrease if the price changes from \$60 to \$39, since the amount of change is \$21, and the original number is \$60, the percent decrease is \$21/\$60, which simplifies to 0.35. And remember that the answer is a percent, so move the decimal point two places to the right, to get 35%. So if the price changes from \$60 to \$39, the percent decrease is 35%.

Tagged under: Percentage,Increase,percent,increase,formula,calculate,change,decrease,math

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