-44.7% is the change from 642 to 355
Calculation steps:
[( 355 - 642 ) ÷ 642] x 100 = -44.7%
Formula
Percentage change = [(355 - 642) / 642] x 100
Subtract the new number by the original number
355 - 642 = -287
-287 ÷ 642 = -0.4470404984423676
-0.4470404984423676 x 100 = -44.7%