30.46% is the change from 591 to 771
Calculation steps:
[( 771 - 591 ) ÷ 591] x 100 = 30.46%
Formula
Percentage change = [(771 - 591) / 591] x 100
Subtract the new number by the original number
771 - 591 = 180
180 ÷ 591 = 0.30456852791878175
0.30456852791878175 x 100 = 30.46%