21.39% is the change from 692 to 840
Calculation steps:
[( 840 - 692 ) ÷ 692] x 100 = 21.39%
Formula
Percentage change = [(840 - 692) / 692] x 100
Subtract the new number by the original number
840 - 692 = 148
148 ÷ 692 = 0.2138728323699422
0.2138728323699422 x 100 = 21.39%