π’ 5-in-1 Fast Math Tools
All-In-One Percentage Calculator
Calculate percentage of values, percentage increase/decrease, student exam marks percentages, and retail discounts instantly.
π‘ What is X% of Y?
What is % of ?
Result: 37.5
π X is what % of Y?
is what % of ?
Result: 25%
π Percentage Increase or Decrease
From to
Increase of 35%
π Exam Marks to Percentage
Obtained: / Total:
80.91% (Grade: A+)
π·οΈ Shopping Discount & Sales Tax (GST) Calculator
Original Price:
Discount %:
Sales Tax / GST %:
Final Price: 4,720 (You save: 1,000 | Tax: 720)
Essential Percentage Math Formulas
A percentage is a number or ratio expressed as a fraction of 100. Understanding fundamental formulas simplifies daily business accounting, grade assessments, and retail budget planning.
- Percentage of Value:
P = (X Γ Y) / 100 - Ratio to Percentage:
Percentage = (X / Y) Γ 100 - Percentage Change:
((New Value - Old Value) / Old Value) Γ 100 - Discount Price:
Discounted Price = Original Price - (Original Price Γ Discount% / 100)