-46.8% is the change from 921 to 490
Calculation steps:
[( 490 - 921 ) ÷ 921] x 100 = -46.8%
Formula
Percentage change = [(490 - 921) / 921] x 100
Subtract the new number by the original number
490 - 921 = -431
-431 ÷ 921 = -0.46796959826275786
-0.46796959826275786 x 100 = -46.8%