9.78% is the change from 491 to 539
Calculation steps:
[( 539 - 491 ) ÷ 491] x 100 = 9.78%
Formula
Percentage change = [(539 - 491) / 491] x 100
Subtract the new number by the original number
539 - 491 = 48
48 ÷ 491 = 0.09775967413441955
0.09775967413441955 x 100 = 9.78%