18.78% is the change from 687 to 816
Calculation steps:
[( 816 - 687 ) ÷ 687] x 100 = 18.78%
Formula
Percentage change = [(816 - 687) / 687] x 100
Subtract the new number by the original number
816 - 687 = 129
129 ÷ 687 = 0.18777292576419213
0.18777292576419213 x 100 = 18.78%