Percentage Calculator: Discount, Marks, aur Growth Rate — Sab Kuch Ek Jagah Seedha Samjho Featured Image

Percentage — School Mein Padhaya, Zindagi Mein Kaam Aata Hai

Seedha bolunga — percentage ka use din mein kitni baar hota hai, hum notice bhi nahi karte. Sale ka 30% off, exam mein 73.4% marks, inflation 6.5% hai, petrol 8% mahanga hua — sab percentage hai.

Phir bhi log Google par type karte hain "480 ka 15% kitna hoga" — koi sharam nahi, main bhi karta hoon kabhi kabhi jab dimag kaam nahi karta. Isliye ek achha calculator hona chahiye jo quick answers de.

Percentage Ke 4 Main Types — Aur Unke Formulas

Type 1: X, Y ka kitna percent hai?

Percentage = (X / Y) × 100

Example: 480 out of 600 marks — (480/600) × 100 = 80%

Type 2: Y ka X% kitna hoga?

Result = (X / 100) × Y

Example: ₹2,500 ka 18% GST — (18/100) × 2500 = ₹450

Type 3: Percentage Change (increase/decrease)

% Change = [(New Value - Old Value) / Old Value] × 100

Example: Petrol ₹95 se ₹102 hua — [(102-95)/95] × 100 = 7.37% increase

Type 4: Reverse Percentage (discount ke baad original price)

Original = Discounted Price / (1 - Discount%/100)

Example: 25% off ke baad ₹750 mein mili — Original = 750/0.75 = ₹1,000

Real Life Mein Percentage — Kaam Ki Situations

Exam Marks Calculate Karna

12th board mein 5 subjects — Physics 85, Chemistry 78, Maths 92, English 88, Computer 90 — total 433/500. Percentage = (433/500) × 100 = 86.6%. Many entrance exams mein yeh cut-off basis hota hai.

Shopping Sale — Sach Mein Kitna Bachega?

Jacket ki price ₹3,200. 40% off. Kitne mein milegi?

  • Discount = 3200 × 0.40 = ₹1,280
  • Final Price = 3200 - 1280 = ₹1,920

Lekin agar uske baad "additional 10% off on app" laga:

  • 1920 × 0.90 = ₹1,728

Note: 40% + 10% = 50% nahi hota! Yahi trick hai jo brands use karti hain.

Salary Increment

Salary ₹45,000 thi, 15% hike mila:

  • Increment = 45,000 × 0.15 = ₹6,750
  • New Salary = ₹51,750

Business Profit/Loss Percentage

Koi cheez ₹8,000 mein kharidi, ₹9,500 mein bachi:

  • Profit = 9500 - 8000 = ₹1,500
  • Profit % = (1500/8000) × 100 = 18.75%

Percentage Se Related Common Confusions

"50% se 50% badhega toh 100% ho jaayega?" — Nahi! Agar ₹100 mein 50% ghata, ₹50 hua. Ab ₹50 mein 50% badha, ₹75 hua — original ₹100 nahi. Yahi stocks mein bhi hota hai.

Percentage point vs percentage change: Agar interest rate 5% se 7% hua — woh 2 percentage points badhi, ya 40% ki increase. Dono alag-alag cheezein hain.

Calculator Use Kaise Karen

  1. Jo calculation chahiye woh type choose karo
  2. Values daalo
  3. Answer turant milega
  4. Step-by-step breakdown bhi milegi — samajhne ke liye

FAQs

Q: CGPA ko percentage mein kaise convert karen?
A: Most universities mein formula: CGPA × 9.5 = Percentage (CBSE ke liye). Lekin har university ka apna conversion formula ho sakta hai.

Q: Marks percentage aur percentile mein kya farak hai?
A: Percentage = aapne kitna score kiya (73%). Percentile = kitne logon se aap aage hain (73rd percentile = 73% logon se aage). JEE mein percentile hota hai, percentage nahi.

Q: Negative percentage kya hoti hai?
A: Haan — jab koi cheez ghatti hai. Stock mein -15% return matlab 15% loss. Inflation -1% matlab deflation. Normal calculation hai.

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