-13.46% is the change from 602 to 521
Calculation steps:
[( 521 - 602 ) ÷ 602] x 100 = -13.46%
Formula
Percentage change = [(521 - 602) / 602] x 100
Subtract the new number by the original number
521 - 602 = -81
-81 ÷ 602 = -0.1345514950166113
-0.1345514950166113 x 100 = -13.46%