32.53% is the change from 581 to 770
Calculation steps:
[( 770 - 581 ) ÷ 581] x 100 = 32.53%
Formula
Percentage change = [(770 - 581) / 581] x 100
Subtract the new number by the original number
770 - 581 = 189
189 ÷ 581 = 0.3253012048192771
0.3253012048192771 x 100 = 32.53%