-40.12% is the change from 643 to 385
Calculation steps:
[( 385 - 643 ) ÷ 643] x 100 = -40.12%
Formula
Percentage change = [(385 - 643) / 643] x 100
Subtract the new number by the original number
385 - 643 = -258
-258 ÷ 643 = -0.401244167962675
-0.401244167962675 x 100 = -40.12%