Question

60 to 90The change is decrease or increase?by ?%

Answer 1

Percentage increase by 50%.

Step-by-step explanation:

Initial Value = 60

Final Value = 90

`\begin{gathered} \%\text{ of change=}(Final\; Value-Initial\; Value)/(Initial\; Value)*100 \\ =(90-60)/(60)*100 \\ =(30)/(60)*100 \\ =(1)/(2)*100 \\ =50\% \end{gathered}`

Since our result is positive, there is a percentage increase by 50%.