-2.53% is the change from 671 to 654
Calculation steps:
[( 654 - 671 ) ÷ 671] x 100 = -2.53%
Formula
Percentage change = [(654 - 671) / 671] x 100
Subtract the new number by the original number
654 - 671 = -17
-17 ÷ 671 = -0.02533532041728763
-0.02533532041728763 x 100 = -2.53%