-34.67% is the change from 649 to 424
Calculation steps:
[( 424 - 649 ) ÷ 649] x 100 = -34.67%
Formula
Percentage change = [(424 - 649) / 649] x 100
Subtract the new number by the original number
424 - 649 = -225
-225 ÷ 649 = -0.34668721109399075
-0.34668721109399075 x 100 = -34.67%