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What is the percent of change from $50$ to $89$ ? $\newline$ Choices: $\newline$ (A) $78\%$ increase $\newline$ (B) $78\%$ decrease $\newline$ (C) $79\%$ increase $\newline$ (D) $79\%$ decrease

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Percent of change

Full solution

Q. What is the percent of change from

50

to

89

?

\newline

Choices:

\newline

(A)

78\%

increase

\newline

(B)

78\%

decrease

\newline

(C)

79\%

increase

\newline

(D)

79\%

decrease

Calculate Difference: Step $1$ : Calculate the difference between the final and initial values. $\newline$ Initial value: $50$ $\newline$ Final value: $89$ $\newline$ Difference = Final value - Initial value = $89 - 50 = 39$
Calculate Percent Change: Step $2$ : Calculate the percent of change. $\newline$ Original amount: $50$ $\newline$ Amount of change: $39$ $\newline$ Percent of change = $(\text{Amount of change} / \text{Original amount}) \times 100\%$ $\newline$ Percent of change = $(39 / 50) \times 100\% = 0.78 \times 100\% = 78\%$
Determine Increase or Decrease: Step $3$ : Determine if it's an increase or decrease. Since the value increased from $50$ to $89$ , it's an increase.

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