17.9% is the change from 771 to 909
Calculation steps:
[( 909 - 771 ) ÷ 771] x 100 = 17.9%
Formula
Percentage change = [(909 - 771) / 771] x 100
Subtract the new number by the original number
909 - 771 = 138
138 ÷ 771 = 0.17898832684824903
0.17898832684824903 x 100 = 17.9%