-13.71% is the change from 671 to 579
Calculation steps:
[( 579 - 671 ) ÷ 671] x 100 = -13.71%
Formula
Percentage change = [(579 - 671) / 671] x 100
Subtract the new number by the original number
579 - 671 = -92
-92 ÷ 671 = -0.13710879284649777
-0.13710879284649777 x 100 = -13.71%