-97.6% is the change from 750 to 18
Calculation steps:
[( 18 - 750 ) ÷ 750] x 100 = -97.6%
Formula
Percentage change = [(18 - 750) / 750] x 100
Subtract the new number by the original number
18 - 750 = -732
-732 ÷ 750 = -0.976
-0.976 x 100 = -97.6%
Example