21.54% is the change from 687 to 835
Calculation steps:
[( 835 - 687 ) ÷ 687] x 100 = 21.54%
Formula
Percentage change = [(835 - 687) / 687] x 100
Subtract the new number by the original number
835 - 687 = 148
148 ÷ 687 = 0.21542940320232898
0.21542940320232898 x 100 = 21.54%