To convert a decimal fraction to a percent, multiply the decimal by 100 and add a percent sign (%).

For 0.7:

$0.7 \times 100 = 70\%$

So, $0.7 = 70\%$.

Would you like more details or have any questions?

Here are 5 related questions:

1. How would you convert 0.35 to a percent?
2. What is the percent form of 0.125?
3. If a fraction is $\frac{3}{4}$, what percent does it represent?
4. How do you convert 0.02 into a percent?
5. How can you convert 1.25 into a percent?

Tip: To quickly convert any decimal to a percent, remember to multiply it by 100!