-46.04% is the change from 921 to 497
Calculation steps:
[( 497 - 921 ) ÷ 921] x 100 = -46.04%
Formula
Percentage change = [(497 - 921) / 921] x 100
Subtract the new number by the original number
497 - 921 = -424
-424 ÷ 921 = -0.4603691639522258
-0.4603691639522258 x 100 = -46.04%