-37.17% is the change from 643 to 404
Calculation steps:
[( 404 - 643 ) ÷ 643] x 100 = -37.17%
Formula
Percentage change = [(404 - 643) / 643] x 100
Subtract the new number by the original number
404 - 643 = -239
-239 ÷ 643 = -0.37169517884914466
-0.37169517884914466 x 100 = -37.17%