-57.01% is the change from 649 to 279
Calculation steps:
[( 279 - 649 ) ÷ 649] x 100 = -57.01%
Formula
Percentage change = [(279 - 649) / 649] x 100
Subtract the new number by the original number
279 - 649 = -370
-370 ÷ 649 = -0.5701078582434514
-0.5701078582434514 x 100 = -57.01%