-45.1% is the change from 918 to 504
Calculation steps:
[( 504 - 918 ) ÷ 918] x 100 = -45.1%
Formula
Percentage change = [(504 - 918) / 918] x 100
Subtract the new number by the original number
504 - 918 = -414
-414 ÷ 918 = -0.45098039215686275
-0.45098039215686275 x 100 = -45.1%