-28.97% is the change from 673 to 478
Calculation steps:
[( 478 - 673 ) ÷ 673] x 100 = -28.97%
Formula
Percentage change = [(478 - 673) / 673] x 100
Subtract the new number by the original number
478 - 673 = -195
-195 ÷ 673 = -0.2897473997028232
-0.2897473997028232 x 100 = -28.97%