28.08% is the change from 609 to 780
Calculation steps:
[( 780 - 609 ) ÷ 609] x 100 = 28.08%
Formula
Percentage change = [(780 - 609) / 609] x 100
Subtract the new number by the original number
780 - 609 = 171
171 ÷ 609 = 0.28078817733990147
0.28078817733990147 x 100 = 28.08%