-26.54% is the change from 437 to 321
Calculation steps:
[( 321 - 437 ) ÷ 437] x 100 = -26.54%
Formula
Percentage change = [(321 - 437) / 437] x 100
Subtract the new number by the original number
321 - 437 = -116
-116 ÷ 437 = -0.2654462242562929
-0.2654462242562929 x 100 = -26.54%