15.26% is the change from 557 to 642
Calculation steps:
[( 642 - 557 ) ÷ 557] x 100 = 15.26%
Formula
Percentage change = [(642 - 557) / 557] x 100
Subtract the new number by the original number
642 - 557 = 85
85 ÷ 557 = 0.1526032315978456
0.1526032315978456 x 100 = 15.26%