-26.77% is the change from 437 to 320
Calculation steps:
[( 320 - 437 ) ÷ 437] x 100 = -26.77%
Formula
Percentage change = [(320 - 437) / 437] x 100
Subtract the new number by the original number
320 - 437 = -117
-117 ÷ 437 = -0.26773455377574373
-0.26773455377574373 x 100 = -26.77%
Example