Offline Percentage Calculator
Calculate percentages, marks, grades, and more with this all-in-one offline tool
Find Percentage
Calculation Results
Enter values and click calculate to see results.
Calculation Details
Detailed calculation steps will appear here.
🔢 Common Percentage Values
📝 Percentage Calculation Tips
Basic Percentage
Percentage = (Part/Whole) × 100. For example, if you got 45 out of 60: (45/60)×100 = 75%.
Percentage Increase
Increase % = [(New - Original)/Original] × 100. If price rose from $50 to $65: [(65-50)/50]×100 = 30% increase.
Percentage Decrease
Decrease % = [(Original - New)/Original] × 100. If price dropped from $80 to $68: [(80-68)/80]×100 = 15% decrease.
Reverse Calculation
To find original value before % increase: Original = New/(1 + %/100). If final price is $110 after 10% increase: 110/(1 + 10/100) = $100.
Percentage of a Number
To find 20% of 150: (20/100)×150 = 30. Or multiply by decimal: 150 × 0.20 = 30.
Difference Between Values
% Difference = |(Value1 - Value2)|/((Value1 + Value2)/2) × 100. Between 80 and 100: |80-100|/90 × 100 ≈ 22.22% difference.
Note: This calculator provides percentage calculations based on standard mathematical formulas. Results are for informational purposes only and should be verified for critical applications.