68.64% is the change from 491 to 828
Calculation steps:
[( 828 - 491 ) ÷ 491] x 100 = 68.64%
Formula
Percentage change = [(828 - 491) / 491] x 100
Subtract the new number by the original number
828 - 491 = 337
337 ÷ 491 = 0.6863543788187373
0.6863543788187373 x 100 = 68.64%