-62.15% is the change from 671 to 254
Calculation steps:
[( 254 - 671 ) ÷ 671] x 100 = -62.15%
Formula
Percentage change = [(254 - 671) / 671] x 100
Subtract the new number by the original number
254 - 671 = -417
-417 ÷ 671 = -0.6214605067064084
-0.6214605067064084 x 100 = -62.15%