By definition we have to:
The percentage is a mathematical symbol, which represents a given quantity as a fraction in 100 equal parts. It is also commonly called percent where percent means "out of every hundred units."
We have then that using the definition we can apply the following formula to obtain a fraction or a decimal:

Where,
A: amount in percentage
Answer:
you can write fraction and decimals equivalents using the expression:
These are the answers for your problem
1. 11/2
2. -1/2
3. -17/20
Answer:
The answer is 393/1000
Step-by-step explanation: