-23.55% is the change from 671 to 513
Calculation steps:
[( 513 - 671 ) ÷ 671] x 100 = -23.55%
Formula
Percentage change = [(513 - 671) / 671] x 100
Subtract the new number by the original number
513 - 671 = -158
-158 ÷ 671 = -0.23546944858420268
-0.23546944858420268 x 100 = -23.55%