-55.69% is the change from 641 to 284
Calculation steps:
[( 284 - 641 ) ÷ 641] x 100 = -55.69%
Formula
Percentage change = [(284 - 641) / 641] x 100
Subtract the new number by the original number
284 - 641 = -357
-357 ÷ 641 = -0.5569422776911076
-0.5569422776911076 x 100 = -55.69%