Answer:
-99%
Explanation:
Since it is going down, it'll be negative.
8,000 - 80 = 7,920
7,920 / 8,000 = 0.99
0.99 x 100 = 99%
-99%
(they might be asking for just 99% though too!)
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather