-38.21% is the change from 649 to 401
Calculation steps:
[( 401 - 649 ) ÷ 649] x 100 = -38.21%
Formula
Percentage change = [(401 - 649) / 649] x 100
Subtract the new number by the original number
401 - 649 = -248
-248 ÷ 649 = -0.38212634822804314
-0.38212634822804314 x 100 = -38.21%