-56.47% is the change from 641 to 279
Calculation steps:
[( 279 - 641 ) ÷ 641] x 100 = -56.47%
Formula
Percentage change = [(279 - 641) / 641] x 100
Subtract the new number by the original number
279 - 641 = -362
-362 ÷ 641 = -0.5647425897035881
-0.5647425897035881 x 100 = -56.47%