Percentage Pro
Math made simple.
Math Cheat Sheet
How to calculate X% of Y?
Formula: (X / 100) * Y
Example: 20% of 150 is (20 / 100) * 150 = 30.
Percentage Change
Formula: ((New - Old) / Old) * 100
If a price goes from $100 to $150, the change is ((150-100)/100)*100 = 50%.
Advertisement