70.06% is the change from 491 to 835
Calculation steps:
[( 835 - 491 ) ÷ 491] x 100 = 70.06%
Formula
Percentage change = [(835 - 491) / 491] x 100
Subtract the new number by the original number
835 - 491 = 344
344 ÷ 491 = 0.7006109979633401
0.7006109979633401 x 100 = 70.06%