68.5% is the change from 581 to 979
Calculation steps:
[( 979 - 581 ) ÷ 581] x 100 = 68.5%
Formula
Percentage change = [(979 - 581) / 581] x 100
Subtract the new number by the original number
979 - 581 = 398
398 ÷ 581 = 0.685025817555938
0.685025817555938 x 100 = 68.5%