5.25% is the change from 590 to 621
Calculation steps:
[( 621 - 590 ) ÷ 590] x 100 = 5.25%
Formula
Percentage change = [(621 - 590) / 590] x 100
Subtract the new number by the original number
621 - 590 = 31
31 ÷ 590 = 0.05254237288135593
0.05254237288135593 x 100 = 5.25%