Meteorologists predicted 7 inches of snow in the storm last night. There was only 5.5 inches of snow. What was the percent error? Round to the nearest whole percent, if necessary.

First: work out the difference (decrease) between the two numbers you are comparing. Then: divide the decrease by the original number and multiply the answer by 100. If your answer is a negative number, then this is a percentage increase.

Step-by-step explanation:

what's that

a negative exponent is translated as follows:

so, we have