max_loss = np.max(loss_values)
min_loss = np.min(loss_values)
print("Maximum Loss : {:.4f}".format(max_loss))
print("")
print("Minimum Loss : {:.4f}".format(min_loss))
print("")
print("Loss difference : {:.4f}".format((max_loss - min_loss)))

Maximum Loss : 0.6931

Minimum Loss : 0.0044

Loss difference : 0.6887