You can unstake your staked TRX at any time. Once you initiate an unstaking request, your TRX will be available for withdrawal after the 3-day pending period. Taking Energy as an example, below is a step-by-step guide to show you how to unstake your TRX and how it will affect your TRON Power.
Step 1: Go to TRONSCAN and click "Connect Wallet" in the upper-right corner.
Step 2: After your wallet is connected, move your cursor to your wallet address, and then click ">" to the right of "Resources" to go to the "Stake 2.0" page.
Step 3: On the "My Stake" tab, click "Unstake TRX".
Step 4: In the window that appears, "Energy + TRON Power" is selected by default. Enter the amount of TRX you would like to unstake and click "Unstake". Then, sign in your TronLink wallet to submit the transaction.
Step 5: After the transaction is submitted and confirmed on-chain, you need to wait 3 days for unstaking before you can withdraw your unstaked TRX.
Step 6: After the pending period ends, you can view the amount of TRX available for withdrawal in the "To Be Withdrawn" section. Click "Withdraw" and then, in the pop-up window, click "Confirm". After that, sign in your TronLink wallet to submit the transaction.
Step 7: After the transaction is submitted and confirmed on-chain, the TRX will be withdrawn to your account automatically.