30.29% is the change from 591 to 770
Calculation steps:
[( 770 - 591 ) ÷ 591] x 100 = 30.29%
Formula
Percentage change = [(770 - 591) / 591] x 100
Subtract the new number by the original number
770 - 591 = 179
179 ÷ 591 = 0.30287648054145516
0.30287648054145516 x 100 = 30.29%