17.67% is the change from 815 to 959
Calculation steps:
[( 959 - 815 ) ÷ 815] x 100 = 17.67%
Formula
Percentage change = [(959 - 815) / 815] x 100
Subtract the new number by the original number
959 - 815 = 144
144 ÷ 815 = 0.17668711656441718
0.17668711656441718 x 100 = 17.67%