22.63% is the change from 539 to 661
Calculation steps:
[( 661 - 539 ) ÷ 539] x 100 = 22.63%
Formula
Percentage change = [(661 - 539) / 539] x 100
Subtract the new number by the original number
661 - 539 = 122
122 ÷ 539 = 0.22634508348794063
0.22634508348794063 x 100 = 22.63%