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# Basic Math/Percentage Increase

Question
Hello:

If something once sold for \$0.25 and now sells for \$1.00, is this an increase of 300% or 400%?

What is the difference?

To find the percent increase, take the current price and subtract the old price, then divide by the old price.  So,

1.00-.25 = .75
.75/.25 = 3 or 300%

Another way to look at it is, if it doubled in price (100% increase), it would be 50 cents, so 200% increase would be 75 cents and 1.00 is a 300% increase.  That's easy when the old and new price are multiples, however, if they're not, it's (new - old) divided by old
Questioner's Rating
 Rating(1-10) Knowledgeability = 10 Clarity of Response = 10 Politeness = 10 Comment Thanks for the reply!

Basic Math

Volunteer

#### Lynn Houston

##### Expertise

I can answer questions in basic algebra and any grade school math.

##### Experience

Love math, currently helping my nephew get through Intermediate Algebra.

Education/Credentials
I majored in Math Ed in college (but decided not to teach), so have over 40 credits of math.