-16.99% is the change from 824 to 684
Calculation steps:
[( 684 - 824 ) ÷ 824] x 100 = -16.99%
Formula
Percentage change = [(684 - 824) / 824] x 100
Subtract the new number by the original number
684 - 824 = -140
-140 ÷ 824 = -0.16990291262135923
-0.16990291262135923 x 100 = -16.99%