39.31% is the change from 491 to 684
Calculation steps:
[( 684 - 491 ) ÷ 491] x 100 = 39.31%
Formula
Percentage change = [(684 - 491) / 491] x 100
Subtract the new number by the original number
684 - 491 = 193
193 ÷ 491 = 0.39307535641547864
0.39307535641547864 x 100 = 39.31%