Find the percent decrease, round to the nearest percent: from 90 points to 45 points.

The decrease in percent is 50 %

Step-by-step explanation:

Initial point is 90 while the final point is 45. We need to find the percent decrease. Percent change is given by :

So, the percent decrease is 50 percent. Hence, this is the required solution.

50

If 10 is 20% of a number, we can multiply it by 5 to get the original number.

So 10 * 5 = 50, and 20% of 50 is 10.

I hope this helps! :)