Please refer to the following steps to change the cPanel account bandwidth limit from WHM.

1. Log in to your WHM Panel.
   
   
2. Go to the Account function and click on the Limit Bandwidth Usage. 
   
   
3. Search the account for which you want to change the bandwidth. 
   
   
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4. Select the account and click on the limit button. 
   
   
5. At the limit bandwidth usage box, enter the bandwidth amount in MB as per your requirement and click on the change button. 
   
   
6. After the successful change of the bandwidth, you will get the below screen.