-45.05% is the change from 646 to 355
Calculation steps:
[( 355 - 646 ) ÷ 646] x 100 = -45.05%
Formula
Percentage change = [(355 - 646) / 646] x 100
Subtract the new number by the original number
355 - 646 = -291
-291 ÷ 646 = -0.4504643962848297
-0.4504643962848297 x 100 = -45.05%