-29.07% is the change from 688 to 488
Calculation steps:
[( 488 - 688 ) ÷ 688] x 100 = -29.07%
Formula
Percentage change = [(488 - 688) / 688] x 100
Subtract the new number by the original number
488 - 688 = -200
-200 ÷ 688 = -0.29069767441860467
-0.29069767441860467 x 100 = -29.07%