16.2% is the change from 815 to 947
Calculation steps:
[( 947 - 815 ) ÷ 815] x 100 = 16.2%
Formula
Percentage change = [(947 - 815) / 815] x 100
Subtract the new number by the original number
947 - 815 = 132
132 ÷ 815 = 0.1619631901840491
0.1619631901840491 x 100 = 16.2%