2.97% is the change from 707 to 728
Calculation steps:
[( 728 - 707 ) ÷ 707] x 100 = 2.97%
Formula
Percentage change = [(728 - 707) / 707] x 100
Subtract the new number by the original number
728 - 707 = 21
21 ÷ 707 = 0.0297029702970297
0.0297029702970297 x 100 = 2.97%