70.88% is the change from 491 to 839
Calculation steps:
[( 839 - 491 ) ÷ 491] x 100 = 70.88%
Formula
Percentage change = [(839 - 491) / 491] x 100
Subtract the new number by the original number
839 - 491 = 348
348 ÷ 491 = 0.7087576374745418
0.7087576374745418 x 100 = 70.88%