rowwise

df = pd.DataFrame() df[‘Date’] = [‘2017-05-20’, ‘2017-05-20’, ‘2017-05-20’] df[‘Price’] = [50, 60, 45] df[‘Prof/Loss’] = (df[‘Price’] / df[‘Price’].shift())*100 – 100 First, I think your math for calculating the Loss/Profit was wrong, I hope I fixed that for you. Second, you can use the .shift() method to get the previous row, use .shift(-1) to get the … Read more