20.2% is the change from 688 to 827
Calculation steps:
[( 827 - 688 ) ÷ 688] x 100 = 20.2%
Formula
Percentage change = [(827 - 688) / 688] x 100
Subtract the new number by the original number
827 - 688 = 139
139 ÷ 688 = 0.20203488372093023
0.20203488372093023 x 100 = 20.2%