8.85% is the change from 870 to 947
Calculation steps:
[( 947 - 870 ) ÷ 870] x 100 = 8.85%
Formula
Percentage change = [(947 - 870) / 870] x 100
Subtract the new number by the original number
947 - 870 = 77
77 ÷ 870 = 0.08850574712643679
0.08850574712643679 x 100 = 8.85%