-45.39% is the change from 921 to 503
Calculation steps:
[( 503 - 921 ) ÷ 921] x 100 = -45.39%
Formula
Percentage change = [(503 - 921) / 921] x 100
Subtract the new number by the original number
503 - 921 = -418
-418 ÷ 921 = -0.4538545059717698
-0.4538545059717698 x 100 = -45.39%