-62.87% is the change from 668 to 248
Calculation steps:
[( 248 - 668 ) ÷ 668] x 100 = -62.87%
Formula
Percentage change = [(248 - 668) / 668] x 100
Subtract the new number by the original number
248 - 668 = -420
-420 ÷ 668 = -0.6287425149700598
-0.6287425149700598 x 100 = -62.87%