-2.27% is the change from 704 to 688
Calculation steps:
[( 688 - 704 ) ÷ 704] x 100 = -2.27%
Formula
Percentage change = [(688 - 704) / 704] x 100
Subtract the new number by the original number
688 - 704 = -16
-16 ÷ 704 = -0.022727272727272728
-0.022727272727272728 x 100 = -2.27%