-3.06% is the change from 523 to 507
Calculation steps:
[( 507 - 523 ) ÷ 523] x 100 = -3.06%
Formula
Percentage change = [(507 - 523) / 523] x 100
Subtract the new number by the original number
507 - 523 = -16
-16 ÷ 523 = -0.030592734225621414
-0.030592734225621414 x 100 = -3.06%