18.64% is the change from 708 to 840
Calculation steps:
[( 840 - 708 ) ÷ 708] x 100 = 18.64%
Formula
Percentage change = [(840 - 708) / 708] x 100
Subtract the new number by the original number
840 - 708 = 132
132 ÷ 708 = 0.1864406779661017
0.1864406779661017 x 100 = 18.64%