-60.69% is the change from 814 to 320
Calculation steps:
[( 320 - 814 ) ÷ 814] x 100 = -60.69%
Formula
Percentage change = [(320 - 814) / 814] x 100
Subtract the new number by the original number
320 - 814 = -494
-494 ÷ 814 = -0.6068796068796068
-0.6068796068796068 x 100 = -60.69%