13.4% is the change from 582 to 660
Calculation steps:
[( 660 - 582 ) ÷ 582] x 100 = 13.4%
Formula
Percentage change = [(660 - 582) / 582] x 100
Subtract the new number by the original number
660 - 582 = 78
78 ÷ 582 = 0.13402061855670103
0.13402061855670103 x 100 = 13.4%