-45.82% is the change from 921 to 499
Calculation steps:
[( 499 - 921 ) ÷ 921] x 100 = -45.82%
Formula
Percentage change = [(499 - 921) / 921] x 100
Subtract the new number by the original number
499 - 921 = -422
-422 ÷ 921 = -0.4581976112920738
-0.4581976112920738 x 100 = -45.82%