-13.76% is the change from 603 to 520
Calculation steps:
[( 520 - 603 ) ÷ 603] x 100 = -13.76%
Formula
Percentage change = [(520 - 603) / 603] x 100
Subtract the new number by the original number
520 - 603 = -83
-83 ÷ 603 = -0.13764510779436154
-0.13764510779436154 x 100 = -13.76%