-86.48% is the change from 688 to 93
Calculation steps:
[( 93 - 688 ) ÷ 688] x 100 = -86.48%
Formula
Percentage change = [(93 - 688) / 688] x 100
Subtract the new number by the original number
93 - 688 = -595
-595 ÷ 688 = -0.8648255813953488
-0.8648255813953488 x 100 = -86.48%