45:9,0%

It seems like you are presenting a fraction or ratio that you want to simplify or convert. If you meant to express this as a percentage, here’s how you can interpret it:

The expression "45:9.0%" seems to indicate a ratio or a comparison. If you're looking at what 45 is as a percentage of 9, you can first convert that into a fraction:

1. Divide 45 by 9: \( \frac{45}{9} = 5 \)

2. To express this as a percentage, multiply by 100: \( 5 \times 100 = 500\% \)

If you meant something else or need further clarification, please provide additional context!