-89.33% is the change from 750 to 80
Calculation steps:
[( 80 - 750 ) ÷ 750] x 100 = -89.33%
Formula
Percentage change = [(80 - 750) / 750] x 100
Subtract the new number by the original number
80 - 750 = -670
-670 ÷ 750 = -0.8933333333333333
-0.8933333333333333 x 100 = -89.33%