Calculation of growth rate

I want to calculate the growth rate of a time series with the formula growth=(current/previous-1)*100. If anyone has done this, kindly guide me. I have the GDP time series and I want to compare GDP series in level and growth rates. Thank you.

[Do Huu Hai]

You can sent data,

Answer 1

[Matt J]

 growth=(series(2:end)./series(1:end-1)-1)*100;