-5.12% is the change from 859 to 815
Calculation steps:
[( 815 - 859 ) ÷ 859] x 100 = -5.12%
Formula
Percentage change = [(815 - 859) / 859] x 100
Subtract the new number by the original number
815 - 859 = -44
-44 ÷ 859 = -0.051222351571594875
-0.051222351571594875 x 100 = -5.12%