-27.76% is the change from 688 to 497
Calculation steps:
[( 497 - 688 ) ÷ 688] x 100 = -27.76%
Formula
Percentage change = [(497 - 688) / 688] x 100
Subtract the new number by the original number
497 - 688 = -191
-191 ÷ 688 = -0.27761627906976744
-0.27761627906976744 x 100 = -27.76%