-26.88% is the change from 666 to 487
Calculation steps:
[( 487 - 666 ) ÷ 666] x 100 = -26.88%
Formula
Percentage change = [(487 - 666) / 666] x 100
Subtract the new number by the original number
487 - 666 = -179
-179 ÷ 666 = -0.26876876876876876
-0.26876876876876876 x 100 = -26.88%