24.7% is the change from 660 to 823
Calculation steps:
[( 823 - 660 ) ÷ 660] x 100 = 24.7%
Formula
Percentage change = [(823 - 660) / 660] x 100
Subtract the new number by the original number
823 - 660 = 163
163 ÷ 660 = 0.24696969696969698
0.24696969696969698 x 100 = 24.7%