-35.89% is the change from 666 to 427
Calculation steps:
[( 427 - 666 ) ÷ 666] x 100 = -35.89%
Formula
Percentage change = [(427 - 666) / 666] x 100
Subtract the new number by the original number
427 - 666 = -239
-239 ÷ 666 = -0.3588588588588589
-0.3588588588588589 x 100 = -35.89%