-56.39% is the change from 321 to 140
Calculation steps:
[( 140 - 321 ) ÷ 321] x 100 = -56.39%
Formula
Percentage change = [(140 - 321) / 321] x 100
Subtract the new number by the original number
140 - 321 = -181
-181 ÷ 321 = -0.5638629283489096
-0.5638629283489096 x 100 = -56.39%