-8.43% is the change from 890 to 815
Calculation steps:
[( 815 - 890 ) ÷ 890] x 100 = -8.43%
Formula
Percentage change = [(815 - 890) / 890] x 100
Subtract the new number by the original number
815 - 890 = -75
-75 ÷ 890 = -0.08426966292134831
-0.08426966292134831 x 100 = -8.43%