If you can easily change the denominator to 10 or 100 (or any power of 10), do it!
 
| Convert | to a percent: | 

TRY IT:
| Convert | to a percent: | 
Here's one that's a little trickier:
| Convert | to a percent: | 

Yes, you CAN have a percent
that still has a decimal in the front!
Weird, huh?