-45.07% is the change from 923 to 507
Calculation steps:
[( 507 - 923 ) ÷ 923] x 100 = -45.07%
Formula
Percentage change = [(507 - 923) / 923] x 100
Subtract the new number by the original number
507 - 923 = -416
-416 ÷ 923 = -0.4507042253521127
-0.4507042253521127 x 100 = -45.07%