-48.97% is the change from 921 to 470
Calculation steps:
[( 470 - 921 ) ÷ 921] x 100 = -48.97%
Formula
Percentage change = [(470 - 921) / 921] x 100
Subtract the new number by the original number
470 - 921 = -451
-451 ÷ 921 = -0.48968512486427795
-0.48968512486427795 x 100 = -48.97%