22.71% is the change from 709 to 870
Calculation steps:
[( 870 - 709 ) ÷ 709] x 100 = 22.71%
Formula
Percentage change = [(870 - 709) / 709] x 100
Subtract the new number by the original number
870 - 709 = 161
161 ÷ 709 = 0.22708039492242596
0.22708039492242596 x 100 = 22.71%