-19.76% is the change from 673 to 540
Calculation steps:
[( 540 - 673 ) ÷ 673] x 100 = -19.76%
Formula
Percentage change = [(540 - 673) / 673] x 100
Subtract the new number by the original number
540 - 673 = -133
-133 ÷ 673 = -0.1976225854383358
-0.1976225854383358 x 100 = -19.76%