<p>A body is dropped on ground from a height &#39;<span class="equation">\(h_1\)</span>&#39; and after hitting the ground, it rebounds to a height &#39;<span class="equation">\(h_2\)</span>&#39;. If the ratio of velocities of the body just before and after hitting ground is 4 , then percentage loss in kinetic energy of the body is&nbsp;<span class="equation">\(\frac{x}{4}\)</span>​​​​​​​. The value of x is ____________</p>