-3.44% is the change from 523 to 505
Calculation steps:
[( 505 - 523 ) ÷ 523] x 100 = -3.44%
Formula
Percentage change = [(505 - 523) / 523] x 100
Subtract the new number by the original number
505 - 523 = -18
-18 ÷ 523 = -0.03441682600382409
-0.03441682600382409 x 100 = -3.44%