-49.51% is the change from 921 to 465
Calculation steps:
[( 465 - 921 ) ÷ 921] x 100 = -49.51%
Formula
Percentage change = [(465 - 921) / 921] x 100
Subtract the new number by the original number
465 - 921 = -456
-456 ÷ 921 = -0.495114006514658
-0.495114006514658 x 100 = -49.51%