Percentage Calculator
Calculate percentages, percentage increase/decrease, and solve various percentage problems with our easy-to-use calculator.
What is X% of Y?
Percentage Change
X is what % of Y?
Percentage to Decimal
Decimal to Percentage
Percentage Error
Percentage Formula Reference
Percentage of a Number
Formula: (Percentage / 100) × Number
Example: 25% of 200 = (25/100) × 200 = 50
Percentage Change
Formula: ((New - Old) / Old) × 100
Example: From 100 to 125 = ((125-100)/100) × 100 = 25%
What Percentage
Formula: (Part / Whole) × 100
Example: 50 is what % of 200? = (50/200) × 100 = 25%