-40.03% is the change from 642 to 385
Calculation steps:
[( 385 - 642 ) ÷ 642] x 100 = -40.03%
Formula
Percentage change = [(385 - 642) / 642] x 100
Subtract the new number by the original number
385 - 642 = -257
-257 ÷ 642 = -0.40031152647975077
-0.40031152647975077 x 100 = -40.03%