-46.19% is the change from 643 to 346
Calculation steps:
[( 346 - 643 ) ÷ 643] x 100 = -46.19%
Formula
Percentage change = [(346 - 643) / 643] x 100
Subtract the new number by the original number
346 - 643 = -297
-297 ÷ 643 = -0.4618973561430793
-0.4618973561430793 x 100 = -46.19%