Please help with the code

[zarnav]

Ok so I have changed my code a bit but is still printing now -139 months which is wrong.

initial_balance = 1000
rate = 10
withdraw = 500
result = 1
target = result
balance = initial_balance
month = 1

while balance>result:
    interest = balance*rate/100
    balance = balance - interest - withdraw
    month = month-interest
    
if balance == month:
    print (month)

print ("no of months is", month)