11.61% is the change from 870 to 971
Calculation steps:
[( 971 - 870 ) ÷ 870] x 100 = 11.61%
Formula
Percentage change = [(971 - 870) / 870] x 100
Subtract the new number by the original number
971 - 870 = 101
101 ÷ 870 = 0.11609195402298851
0.11609195402298851 x 100 = 11.61%