-52.55% is the change from 921 to 437
Calculation steps:
[( 437 - 921 ) ÷ 921] x 100 = -52.55%
Formula
Percentage change = [(437 - 921) / 921] x 100
Subtract the new number by the original number
437 - 921 = -484
-484 ÷ 921 = -0.5255157437567861
-0.5255157437567861 x 100 = -52.55%