You would need around €500.12 (2,409.86 MYR) in Malaysia to maintain the same standard of life that you can have with €1,219.80 in Germany (assuming you rent a place to live in both cities). This assumes net earnings (after income tax).
If you eat out 4x a week in an inexpensive, and 1x a week in a mid-range restaurant you will pay €48.52 less in Malaysia (€13.48) than in Germany (€62.00).
For monthly supply of groceries worth €203.30 in Germany you will pay €18.29 less in Malaysia (€185.01). If you are an average smoker (1 pack per day), you'll spend €74.16 less on cigarettes each month than in Germany.
To buy an 85m2 apartment in Malaysia city centre you will need €146,447.75 which is €182,985.05 less than in Germany (€329,432.80), however to buy one outside of the city centre you will need €81,209.17 which is €141,966.83 less than in Germany (€223,176.00).