21.95% is the change from 688 to 839
Calculation steps:
[( 839 - 688 ) ÷ 688] x 100 = 21.95%
Formula
Percentage change = [(839 - 688) / 688] x 100
Subtract the new number by the original number
839 - 688 = 151
151 ÷ 688 = 0.2194767441860465
0.2194767441860465 x 100 = 21.95%