-43.76% is the change from 921 to 518
Calculation steps:
[( 518 - 921 ) ÷ 921] x 100 = -43.76%
Formula
Percentage change = [(518 - 921) / 921] x 100
Subtract the new number by the original number
518 - 921 = -403
-403 ÷ 921 = -0.4375678610206297
-0.4375678610206297 x 100 = -43.76%