31.84% is the change from 581 to 766
Calculation steps:
[( 766 - 581 ) ÷ 581] x 100 = 31.84%
Formula
Percentage change = [(766 - 581) / 581] x 100
Subtract the new number by the original number
766 - 581 = 185
185 ÷ 581 = 0.31841652323580033
0.31841652323580033 x 100 = 31.84%