Respuesta :

Answer:

70%

Step-by-step explanation:

To find the decrease:

original/current

450/315 = .7

Now multiply .7 by 100 to get a percent

.7 * 100 - 70%

450 * .7 =  315

70% is the answer!

Answer:

30 percent

(315 - 450)/450

x 100% = 30%

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