-18.93% is the change from 671 to 544
Calculation steps:
[( 544 - 671 ) ÷ 671] x 100 = -18.93%
Formula
Percentage change = [(544 - 671) / 671] x 100
Subtract the new number by the original number
544 - 671 = -127
-127 ÷ 671 = -0.18926974664679583
-0.18926974664679583 x 100 = -18.93%