-24.67% is the change from 673 to 507
Calculation steps:
[( 507 - 673 ) ÷ 673] x 100 = -24.67%
Formula
Percentage change = [(507 - 673) / 673] x 100
Subtract the new number by the original number
507 - 673 = -166
-166 ÷ 673 = -0.24665676077265974
-0.24665676077265974 x 100 = -24.67%