-18.77% is the change from 666 to 541
Calculation steps:
[( 541 - 666 ) ÷ 666] x 100 = -18.77%
Formula
Percentage change = [(541 - 666) / 666] x 100
Subtract the new number by the original number
541 - 666 = -125
-125 ÷ 666 = -0.18768768768768768
-0.18768768768768768 x 100 = -18.77%