20.55% is the change from 506 to 610
Calculation steps:
[( 610 - 506 ) ÷ 506] x 100 = 20.55%
Formula
Percentage change = [(610 - 506) / 506] x 100
Subtract the new number by the original number
610 - 506 = 104
104 ÷ 506 = 0.20553359683794467
0.20553359683794467 x 100 = 20.55%