-35.69% is the change from 664 to 427
Calculation steps:
[( 427 - 664 ) ÷ 664] x 100 = -35.69%
Formula
Percentage change = [(427 - 664) / 664] x 100
Subtract the new number by the original number
427 - 664 = -237
-237 ÷ 664 = -0.3569277108433735
-0.3569277108433735 x 100 = -35.69%