17.76% is the change from 687 to 809
Calculation steps:
[( 809 - 687 ) ÷ 687] x 100 = 17.76%
Formula
Percentage change = [(809 - 687) / 687] x 100
Subtract the new number by the original number
809 - 687 = 122
122 ÷ 687 = 0.17758369723435224
0.17758369723435224 x 100 = 17.76%