Layla is a great singer. She is so famous she had 15 bodyguards at last night's concert. At her concert last month, she had 12. What is the percent of change?
To calculate the percent of change, we use the formula:
Percent Change = ((New Value - Old Value) / Old Value) x 100
New Value = 15
Old Value = 12
Percent Change = ((15 - 12) / 12) x 100
Percent Change = (3 / 12) x 100
Percent Change = 0.25 x 100
Percent Change = 25%
So, there was a 25% increase in the number of bodyguards for Layla's concert from last month to last night.