How do I calculate a percentage increase?

Subtract the original number from the new number, divide the result by the original number, and multiply by 100. Formula: ((New - Old) / Old) x 100.

how to find 20% of a number?

To find 20% of a number, simply multiply the number by 0.20. For example, 20% of 50 is 50 x 0.20 = 10.

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Formula Logic

Percentages are the universal language of comparison. Whether you're calculating a discount at the store or measuring year-over-year business growth, mastering these three core formulas gives you a mathematical edge.

Find the Part

"What is 20% of 150?"
Formula: (Percentage ÷ 100) × Total

Percent Change

"How much did we grow?"
Formula: ((New Value - Old Value) ÷ Old Value) × 100

Real World Math

Apply these formulas to everyday financial decisions.

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