To turn ratios into percentages, follow these simple steps:

1. Know the Ratio: A ratio, like $a:b$, shows how many parts of one thing there are compared to another. For example, a ratio of $2:3$ means there are 2 parts of one item for every 3 parts of another item.

2. Change the Ratio to a Fraction: Write the ratio as a fraction. For the ratio $2:3$, you can write it as $\frac{2}{2+3} = \frac{2}{5}$.

3. Find the Decimal: To turn the fraction into a decimal, divide the top number (the numerator) by the bottom number (the denominator). For example, $\frac{2}{5} = 0.4$.

4. Convert to Percentage: To get the percentage, multiply the decimal by 100. So, $0.4 \times 100 = 40\%$.

5. Understand the Result: The percentage tells you how much of the total is represented by that part of the ratio. In this case, $40\%$ of the total comes from the first part of the $2:3$ ratio.

This way, you can easily change ratios into percentages. This helps you compare and understand different sets of data better. Remember, the total number of parts in the ratio is important for making the conversion. It helps you find the right amount to use in your calculations.