Uncover the precise methods to skillfully solve the examples of percentage increase and adeptly interpret percentage gain, empowering you with the knowledge to confidently navigate the dynamic world of growth and expansion.

**Example 1: Home Price Appreciation**-
The price of your house increased from $250,000 to $300,000. What is the percentage increase in the home value?

**Example 2: Website Traffic Growth**-
Your website had 1,000 visitors last month and 1,200 this month. What is the percent increase in website traffic?

**Example 3: Book Sales Spike**-
You sold 500 books last year and 750 books this year. What is the percent increase in book sales?