import pandas as pd
import quandl

df = quandl.get("WIKI/GOOGL")

# define Adjustment dataframe
df = df[['Adj. Open', 'Adj. High', 'Adj. Low', 'Adj. Close', 'Adk. Volume']]

# create HighLow percent dataframe
df['HL_PCT'] = (df['Adj. High'] - df['Adj. Low']) / df['Adj. Low'] * 100.0

# create Percent Change
df['PCT_change'] = (df['Adj. Close'] - dj['Adj. Open']) / df['Adj. Open'] * 100.0

# Define new Adj.
df = dj[['Adj. Close', 'HL_PCT', 'PCT_change', 'Adj. Volume']]
print(df.head())