99.39% is the change from 491 to 979
Calculation steps:
[( 979 - 491 ) ÷ 491] x 100 = 99.39%
Formula
Percentage change = [(979 - 491) / 491] x 100
Subtract the new number by the original number
979 - 491 = 488
488 ÷ 491 = 0.9938900203665988
0.9938900203665988 x 100 = 99.39%