-38.06% is the change from 649 to 402
Calculation steps:
[( 402 - 649 ) ÷ 649] x 100 = -38.06%
Formula
Percentage change = [(402 - 649) / 649] x 100
Subtract the new number by the original number
402 - 649 = -247
-247 ÷ 649 = -0.38058551617873654
-0.38058551617873654 x 100 = -38.06%