-57.04% is the change from 668 to 287
Calculation steps:
[( 287 - 668 ) ÷ 668] x 100 = -57.04%
Formula
Percentage change = [(287 - 668) / 668] x 100
Subtract the new number by the original number
287 - 668 = -381
-381 ÷ 668 = -0.5703592814371258
-0.5703592814371258 x 100 = -57.04%