Percentage of single contract payment = payment amount/total contract amount, and then multiply by two to get two payments.

In other algorithms, the percentage of all contract payments = all contract payments/all contract amounts, and the percentage of personal performance payments = my paid-back amount/my performance.

The repayment amount means, for example, when signing the contract, the total amount indicated is 100 yuan. Up to now, the other party has received the payment from 20 yuan, which is the repayment amount from 20 yuan.