26.82% is the change from 686 to 870
Calculation steps:
[( 870 - 686 ) ÷ 686] x 100 = 26.82%
Formula
Percentage change = [(870 - 686) / 686] x 100
Subtract the new number by the original number
870 - 686 = 184
184 ÷ 686 = 0.26822157434402333
0.26822157434402333 x 100 = 26.82%