30.82% is the change from 704 to 921
Calculation steps:
[( 921 - 704 ) ÷ 704] x 100 = 30.82%
Formula
Percentage change = [(921 - 704) / 704] x 100
Subtract the new number by the original number
921 - 704 = 217
217 ÷ 704 = 0.30823863636363635
0.30823863636363635 x 100 = 30.82%