-9.2% is the change from 815 to 740
Calculation steps:
[( 740 - 815 ) ÷ 815] x 100 = -9.2%
Formula
Percentage change = [(740 - 815) / 815] x 100
Subtract the new number by the original number
740 - 815 = -75
-75 ÷ 815 = -0.09202453987730061
-0.09202453987730061 x 100 = -9.2%