19.8% is the change from 687 to 823
Calculation steps:
[( 823 - 687 ) ÷ 687] x 100 = 19.8%
Formula
Percentage change = [(823 - 687) / 687] x 100
Subtract the new number by the original number
823 - 687 = 136
136 ÷ 687 = 0.19796215429403202
0.19796215429403202 x 100 = 19.8%