Free Online Percentage Calculator
Divide the small part by the whole, then multiply that answer by 100. The formula looks like this:
(Part ÷ Whole) × 100 = Percentage
or let part be x and whole be y: (x ÷ y) × 100 = Percentage
Say you score 400 out of 500 on an exam. Divide 400 by 500 and you get 0.80. Multiply that by 100, and you land on 80%. That's it, no complicated math, just divide and multiply.
Divide X by 100, then multiply that answer by Y. The formula is:
(X ÷ 100) × Y = Result
For example, what's 40% of 150? Divide 40 by 100 to get 0.4, then multiply by 150. You get 60. So 40% of 150 is 60. Useful when you're working out a discount, a tip, or a commission.
Divide X by Y, then multiply that answer by 100. The formula is:
(X ÷ Y) × 100 = Percentage
For example, you got 35 questions right out of 50. Divide 35 by 50 to get 0.70, then multiply by 100. That gives you 70%, so 35 is 70% of 50.
Divide X by (Y ÷ 100). The formula is:
X ÷ (Y ÷ 100) = Result
Suppose you're told 70 is 40% of some number and you want to know what that number is. Divide 40 by 100 to get 0.4, then divide 70 by 0.4. You end up with 175. So 70 is 40% of 175.
Percentage of a number = (Percentage ÷ 100) × Number
For example, to find 20% of 170. (20 ÷ 100) × 170 = 34. So 20% of 170 is 34.
To increase a number by a certain percentage, you add the value of the percentage to the original number. Formula:
Original + (Original × Percentage ÷ 100) = New Value
For example, if your rent is ₹25,000 and it's increasing by 6%, find 6% of 25,000 = 1,500, then add this to the original. Your new rent is ₹26,500.
Same idea, but you subtract instead of add. Formula:
Original - (Original × Percentage ÷ 100) = New Value
For example: A jacket originally priced at ₹3,500 is on sale for 15% off. Fifteen percent of 3,500 = 525. Subtract that from the original price, and you're paying ₹2,975.