Answer:
-54.5%
Step-by-step explanation:
You will have to use this formula
[tex]\frac{new value-oldvalue}{oldvalue}[/tex]
When substituted in you have [tex]\frac{30-66}{66}[/tex]
30-66=-36
-36/66= -0.54 (54 repeating)
Then you have to convert this into a percentage, -54.54(repeating) percent
To the nearest hundredth you would round down to -54.5%.
It is a Decrease because it is negatated.
