React Hook : Send data from child to parent component

You can create a method in your parent component, pass it to child component and call it from props every time child's state changes, keeping the state in child component.

    const EnhancedTable = ({ parentCallback }) => {
        const [count, setCount] = useState(0);
        
        return (
            <button onClick={() => {
                const newValue = count + 1;
                setCount(newValue);
                parentCallback(newValue);
            }}>
                 Click me {count}
            </button>
        )
    };

    class PageComponent extends React.Component { 
        callback = (count) => {
            // do something with value in parent component, like save to state
        }

        render() {
            return (
                <div className="App">
                    <EnhancedTable parentCallback={this.callback} />         
                    <h2>count 0</h2>
                    (count should be updated from child)
                </div>
            )
        }
    }

A common technique for these situations is to lift the state up to the first common ancestor of all the components that needs to use the state (i.e. the PageComponent in this case) and pass down the state and state-altering functions to the child components as props.

Example

const { useState } = React;

function PageComponent() {
  const [count, setCount] = useState(0);
  const increment = () => {
    setCount(count + 1)
  }

  return (
    <div className="App">
      <ChildComponent onClick={increment} count={count} />         
      <h2>count {count}</h2>
      (count should be updated from child)
    </div>
  );
}

const ChildComponent = ({ onClick, count }) => {
  return (
    <button onClick={onClick}>
       Click me {count}
    </button>
  )
};

ReactDOM.render(<PageComponent />, document.getElementById("root"));

<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>

<div id="root"></div>