-34.21% is the change from 649 to 427
Calculation steps:
[( 427 - 649 ) ÷ 649] x 100 = -34.21%
Formula
Percentage change = [(427 - 649) / 649] x 100
Subtract the new number by the original number
427 - 649 = -222
-222 ÷ 649 = -0.3420647149460709
-0.3420647149460709 x 100 = -34.21%