-49.62% is the change from 921 to 464
Calculation steps:
[( 464 - 921 ) ÷ 921] x 100 = -49.62%
Formula
Percentage change = [(464 - 921) / 921] x 100
Subtract the new number by the original number
464 - 921 = -457
-457 ÷ 921 = -0.496199782844734
-0.496199782844734 x 100 = -49.62%