50% down payment means 50% down payment, and 50% converted into percentage is 50÷ 100=0.5. It is calculated by multiplying the total purchase price by 0.5. For example, the total house price of 650,000 yuan is 650,000× 0.5 = 325,000. For example, if your 30% down payment is multiplied by 0.3, the house with a total price of 650,000 is 650,000× 0.3 =195,000 yuan.