-17.46% is the change from 613 to 506
Calculation steps:
[( 506 - 613 ) ÷ 613] x 100 = -17.46%
Formula
Percentage change = [(506 - 613) / 613] x 100
Subtract the new number by the original number
506 - 613 = -107
-107 ÷ 613 = -0.17455138662316477
-0.17455138662316477 x 100 = -17.46%