-82.99% is the change from 688 to 117
Calculation steps:
[( 117 - 688 ) ÷ 688] x 100 = -82.99%
Formula
Percentage change = [(117 - 688) / 688] x 100
Subtract the new number by the original number
117 - 688 = -571
-571 ÷ 688 = -0.8299418604651163
-0.8299418604651163 x 100 = -82.99%