-40.34% is the change from 642 to 383
Calculation steps:
[( 383 - 642 ) ÷ 642] x 100 = -40.34%
Formula
Percentage change = [(383 - 642) / 642] x 100
Subtract the new number by the original number
383 - 642 = -259
-259 ÷ 642 = -0.40342679127725856
-0.40342679127725856 x 100 = -40.34%