23.4% is the change from 705 to 870
Calculation steps:
[( 870 - 705 ) ÷ 705] x 100 = 23.4%
Formula
Percentage change = [(870 - 705) / 705] x 100
Subtract the new number by the original number
870 - 705 = 165
165 ÷ 705 = 0.23404255319148937
0.23404255319148937 x 100 = 23.4%