-85.47% is the change from 688 to 100
Calculation steps:
[( 100 - 688 ) ÷ 688] x 100 = -85.47%
Formula
Percentage change = [(100 - 688) / 688] x 100
Subtract the new number by the original number
100 - 688 = -588
-588 ÷ 688 = -0.8546511627906976
-0.8546511627906976 x 100 = -85.47%