20.74% is the change from 704 to 850
Calculation steps:
[( 850 - 704 ) ÷ 704] x 100 = 20.74%
Formula
Percentage change = [(850 - 704) / 704] x 100
Subtract the new number by the original number
850 - 704 = 146
146 ÷ 704 = 0.20738636363636365
0.20738636363636365 x 100 = 20.74%