-92.7% is the change from 671 to 49
Calculation steps:
[( 49 - 671 ) ÷ 671] x 100 = -92.7%
Formula
Percentage change = [(49 - 671) / 671] x 100
Subtract the new number by the original number
49 - 671 = -622
-622 ÷ 671 = -0.9269746646795827
-0.9269746646795827 x 100 = -92.7%