2.25% is the change from 578 to 591
Calculation steps:
[( 591 - 578 ) ÷ 578] x 100 = 2.25%
Formula
Percentage change = [(591 - 578) / 578] x 100
Subtract the new number by the original number
591 - 578 = 13
13 ÷ 578 = 0.02249134948096886
0.02249134948096886 x 100 = 2.25%