20.52% is the change from 697 to 840
Calculation steps:
[( 840 - 697 ) ÷ 697] x 100 = 20.52%
Formula
Percentage change = [(840 - 697) / 697] x 100
Subtract the new number by the original number
840 - 697 = 143
143 ÷ 697 = 0.20516499282639886
0.20516499282639886 x 100 = 20.52%