-49.09% is the change from 656 to 334
Calculation steps:
[( 334 - 656 ) ÷ 656] x 100 = -49.09%
Formula
Percentage change = [(334 - 656) / 656] x 100
Subtract the new number by the original number
334 - 656 = -322
-322 ÷ 656 = -0.49085365853658536
-0.49085365853658536 x 100 = -49.09%