21.13% is the change from 568 to 688
Calculation steps:
[( 688 - 568 ) ÷ 568] x 100 = 21.13%
Formula
Percentage change = [(688 - 568) / 568] x 100
Subtract the new number by the original number
688 - 568 = 120
120 ÷ 568 = 0.2112676056338028
0.2112676056338028 x 100 = 21.13%