-43.91% is the change from 640 to 359
Calculation steps:
[( 359 - 640 ) ÷ 640] x 100 = -43.91%
Formula
Percentage change = [(359 - 640) / 640] x 100
Subtract the new number by the original number
359 - 640 = -281
-281 ÷ 640 = -0.4390625
-0.4390625 x 100 = -43.91%