-2.29% is the change from 523 to 511
Calculation steps:
[( 511 - 523 ) ÷ 523] x 100 = -2.29%
Formula
Percentage change = [(511 - 523) / 523] x 100
Subtract the new number by the original number
511 - 523 = -12
-12 ÷ 523 = -0.022944550669216062
-0.022944550669216062 x 100 = -2.29%