-35.59% is the change from 666 to 429
Calculation steps:
[( 429 - 666 ) ÷ 666] x 100 = -35.59%
Formula
Percentage change = [(429 - 666) / 666] x 100
Subtract the new number by the original number
429 - 666 = -237
-237 ÷ 666 = -0.35585585585585583
-0.35585585585585583 x 100 = -35.59%