-31% is the change from 642 to 443
Calculation steps:
[( 443 - 642 ) ÷ 642] x 100 = -31%
Formula
Percentage change = [(443 - 642) / 642] x 100
Subtract the new number by the original number
443 - 642 = -199
-199 ÷ 642 = -0.3099688473520249
-0.3099688473520249 x 100 = -31%