31.35% is the change from 587 to 771
Calculation steps:
[( 771 - 587 ) ÷ 587] x 100 = 31.35%
Formula
Percentage change = [(771 - 587) / 587] x 100
Subtract the new number by the original number
771 - 587 = 184
184 ÷ 587 = 0.313458262350937
0.313458262350937 x 100 = 31.35%