-28% is the change from 750 to 540
Calculation steps:
[( 540 - 750 ) ÷ 750] x 100 = -28%
Formula
Percentage change = [(540 - 750) / 750] x 100
Subtract the new number by the original number
540 - 750 = -210
-210 ÷ 750 = -0.28
-0.28 x 100 = -28%
Example