The withdrawal fees for Unstake fees are calculated based on the amount of time that your rewards have been staked. If you withdraw before the 14 days have run their course, your rewards will be burned and the withdrawal fee will be applied to your entire bag. This means that the more time your rewards have been staked, the higher the withdrawal fee will be. After 14 days, you will get the entire bag back, along with the rewards that you have earned. This is why it is important to plan ahead and make sure that you are not withdrawing too early, as this will result in a higher fee.