67.62% is the change from 491 to 823
Calculation steps:
[( 823 - 491 ) ÷ 491] x 100 = 67.62%
Formula
Percentage change = [(823 - 491) / 491] x 100
Subtract the new number by the original number
823 - 491 = 332
332 ÷ 491 = 0.6761710794297352
0.6761710794297352 x 100 = 67.62%