-6.87% is the change from 815 to 759
Calculation steps:
[( 759 - 815 ) ÷ 815] x 100 = -6.87%
Formula
Percentage change = [(759 - 815) / 815] x 100
Subtract the new number by the original number
759 - 815 = -56
-56 ÷ 815 = -0.0687116564417178
-0.0687116564417178 x 100 = -6.87%