4.9% is the change from 592 to 621
Calculation steps:
[( 621 - 592 ) ÷ 592] x 100 = 4.9%
Formula
Percentage change = [(621 - 592) / 592] x 100
Subtract the new number by the original number
621 - 592 = 29
29 ÷ 592 = 0.048986486486486486
0.048986486486486486 x 100 = 4.9%