-6.5% is the change from 800 to 748
Calculation steps:
[( 748 - 800 ) ÷ 800] x 100 = -6.5%
Formula
Percentage change = [(748 - 800) / 800] x 100
Subtract the new number by the original number
748 - 800 = -52
-52 ÷ 800 = -0.065
-0.065 x 100 = -6.5%
Example