-45.15% is the change from 928 to 509
Calculation steps:
[( 509 - 928 ) ÷ 928] x 100 = -45.15%
Formula
Percentage change = [(509 - 928) / 928] x 100
Subtract the new number by the original number
509 - 928 = -419
-419 ÷ 928 = -0.4515086206896552
-0.4515086206896552 x 100 = -45.15%