-31.1% is the change from 643 to 443
Calculation steps:
[( 443 - 643 ) ÷ 643] x 100 = -31.1%
Formula
Percentage change = [(443 - 643) / 643] x 100
Subtract the new number by the original number
443 - 643 = -200
-200 ÷ 643 = -0.3110419906687403
-0.3110419906687403 x 100 = -31.1%