-46.47% is the change from 921 to 493
Calculation steps:
[( 493 - 921 ) ÷ 921] x 100 = -46.47%
Formula
Percentage change = [(493 - 921) / 921] x 100
Subtract the new number by the original number
493 - 921 = -428
-428 ÷ 921 = -0.46471226927252984
-0.46471226927252984 x 100 = -46.47%