-97.7% is the change from 783 to 18
Calculation steps:
[( 18 - 783 ) ÷ 783] x 100 = -97.7%
Formula
Percentage change = [(18 - 783) / 783] x 100
Subtract the new number by the original number
18 - 783 = -765
-765 ÷ 783 = -0.9770114942528736
-0.9770114942528736 x 100 = -97.7%