How to get percent change between two intraday values?

Hello Team,

I have syntax below that gets data at exactly 6PM (df) and latest tick of EUR= (df2)

I'd like to get the percentage between the two output.

I tried df3 =((df2-df)/df*100) but it is not working.

Also, how can I set a specific timezone?

import refinitiv.data as rd
rd.open_session()

df = rd.get_history(
universe = ['EUR='],fields=['BID'],interval="tick",end="2024-11-19T19:00:00",count=1
)

df2 = rd.get_history(
universe = ['EUR='],fields=['BID'],interval="tick", count=1
)

df3 =((df2-df)/df*100)

display(df,df2,df3)


Thank you!