-55.54% is the change from 641 to 285
Calculation steps:
[( 285 - 641 ) ÷ 641] x 100 = -55.54%
Formula
Percentage change = [(285 - 641) / 641] x 100
Subtract the new number by the original number
285 - 641 = -356
-356 ÷ 641 = -0.5553822152886115
-0.5553822152886115 x 100 = -55.54%