-13.38% is the change from 583 to 505
Calculation steps:
[( 505 - 583 ) ÷ 583] x 100 = -13.38%
Formula
Percentage change = [(505 - 583) / 583] x 100
Subtract the new number by the original number
505 - 583 = -78
-78 ÷ 583 = -0.13379073756432247
-0.13379073756432247 x 100 = -13.38%