30.94% is the change from 711 to 931
Calculation steps:
[( 931 - 711 ) ÷ 711] x 100 = 30.94%
Formula
Percentage change = [(931 - 711) / 711] x 100
Subtract the new number by the original number
931 - 711 = 220
220 ÷ 711 = 0.30942334739803096
0.30942334739803096 x 100 = 30.94%