13.38% is the change from 583 to 661
Calculation steps:
[( 661 - 583 ) ÷ 583] x 100 = 13.38%
Formula
Percentage change = [(661 - 583) / 583] x 100
Subtract the new number by the original number
661 - 583 = 78
78 ÷ 583 = 0.13379073756432247
0.13379073756432247 x 100 = 13.38%