-7.5% is the change from 800 to 740
Calculation steps:
[( 740 - 800 ) ÷ 800] x 100 = -7.5%
Formula
Percentage change = [(740 - 800) / 800] x 100
Subtract the new number by the original number
740 - 800 = -60
-60 ÷ 800 = -0.075
-0.075 x 100 = -7.5%
Example