Answer:

Step-by-step explanation:
The relative change is defined by the following equation:
(1)
Where:


With this in mind, let's replace the values in the equation (1):

If we take 210 to be the 100%, what is 70 off of it in percentage then?
Answer:thxxxxxxs for the points
Step-by-step explanation:
I can help with 5 - 7.
5. 19.6 (Rounds up to 20.)
6. 56.7 (Rounds up to 57.)
7. 9.86 (Rounds up to 10.)
Sorry I couldn't help with more.
I hope this does help.