-63.04% is the change from 671 to 248
Calculation steps:
[( 248 - 671 ) ÷ 671] x 100 = -63.04%
Formula
Percentage change = [(248 - 671) / 671] x 100
Subtract the new number by the original number
248 - 671 = -423
-423 ÷ 671 = -0.6304023845007451
-0.6304023845007451 x 100 = -63.04%