2.18% is the change from 688 to 703
Calculation steps:
[( 703 - 688 ) ÷ 688] x 100 = 2.18%
Formula
Percentage change = [(703 - 688) / 688] x 100
Subtract the new number by the original number
703 - 688 = 15
15 ÷ 688 = 0.02180232558139535
0.02180232558139535 x 100 = 2.18%