-3.89% is the change from 437 to 420
Calculation steps:
[( 420 - 437 ) ÷ 437] x 100 = -3.89%
Formula
Percentage change = [(420 - 437) / 437] x 100
Subtract the new number by the original number
420 - 437 = -17
-17 ÷ 437 = -0.038901601830663615
-0.038901601830663615 x 100 = -3.89%