-94.3% is the change from 684 to 39
Calculation steps:
[( 39 - 684 ) ÷ 684] x 100 = -94.3%
Formula
Percentage change = [(39 - 684) / 684] x 100
Subtract the new number by the original number
39 - 684 = -645
-645 ÷ 684 = -0.9429824561403509
-0.9429824561403509 x 100 = -94.3%