-28.08% is the change from 666 to 479
Calculation steps:
[( 479 - 666 ) ÷ 666] x 100 = -28.08%
Formula
Percentage change = [(479 - 666) / 666] x 100
Subtract the new number by the original number
479 - 666 = -187
-187 ÷ 666 = -0.2807807807807808
-0.2807807807807808 x 100 = -28.08%