-15.17% is the change from 613 to 520
Calculation steps:
[( 520 - 613 ) ÷ 613] x 100 = -15.17%
Formula
Percentage change = [(520 - 613) / 613] x 100
Subtract the new number by the original number
520 - 613 = -93
-93 ÷ 613 = -0.15171288743882544
-0.15171288743882544 x 100 = -15.17%