21.28% is the change from 564 to 684
Calculation steps:
[( 684 - 564 ) ÷ 564] x 100 = 21.28%
Formula
Percentage change = [(684 - 564) / 564] x 100
Subtract the new number by the original number
684 - 564 = 120
120 ÷ 564 = 0.2127659574468085
0.2127659574468085 x 100 = 21.28%