68.82% is the change from 587 to 991
Calculation steps:
[( 991 - 587 ) ÷ 587] x 100 = 68.82%
Formula
Percentage change = [(991 - 587) / 587] x 100
Subtract the new number by the original number
991 - 587 = 404
404 ÷ 587 = 0.6882453151618398
0.6882453151618398 x 100 = 68.82%