-31.26% is the change from 643 to 442
Calculation steps:
[( 442 - 643 ) ÷ 643] x 100 = -31.26%
Formula
Percentage change = [(442 - 643) / 643] x 100
Subtract the new number by the original number
442 - 643 = -201
-201 ÷ 643 = -0.31259720062208396
-0.31259720062208396 x 100 = -31.26%