-97.4% is the change from 693 to 18
Calculation steps:
[( 18 - 693 ) ÷ 693] x 100 = -97.4%
Formula
Percentage change = [(18 - 693) / 693] x 100
Subtract the new number by the original number
18 - 693 = -675
-675 ÷ 693 = -0.974025974025974
-0.974025974025974 x 100 = -97.4%