-31.33% is the change from 750 to 515
Calculation steps:
[( 515 - 750 ) ÷ 750] x 100 = -31.33%
Formula
Percentage change = [(515 - 750) / 750] x 100
Subtract the new number by the original number
515 - 750 = -235
-235 ÷ 750 = -0.31333333333333335
-0.31333333333333335 x 100 = -31.33%