21.76% is the change from 501 to 610
Calculation steps:
[( 610 - 501 ) ÷ 501] x 100 = 21.76%
Formula
Percentage change = [(610 - 501) / 501] x 100
Subtract the new number by the original number
610 - 501 = 109
109 ÷ 501 = 0.21756487025948104
0.21756487025948104 x 100 = 21.76%