-13.38% is the change from 613 to 531
Calculation steps:
[( 531 - 613 ) ÷ 613] x 100 = -13.38%
Formula
Percentage change = [(531 - 613) / 613] x 100
Subtract the new number by the original number
531 - 613 = -82
-82 ÷ 613 = -0.13376835236541598
-0.13376835236541598 x 100 = -13.38%