-55.57% is the change from 646 to 287
Calculation steps:
[( 287 - 646 ) ÷ 646] x 100 = -55.57%
Formula
Percentage change = [(287 - 646) / 646] x 100
Subtract the new number by the original number
287 - 646 = -359
-359 ÷ 646 = -0.5557275541795665
-0.5557275541795665 x 100 = -55.57%