19.66% is the change from 702 to 840
Calculation steps:
[( 840 - 702 ) ÷ 702] x 100 = 19.66%
Formula
Percentage change = [(840 - 702) / 702] x 100
Subtract the new number by the original number
840 - 702 = 138
138 ÷ 702 = 0.19658119658119658
0.19658119658119658 x 100 = 19.66%