24.32% is the change from 666 to 828
Calculation steps:
[( 828 - 666 ) ÷ 666] x 100 = 24.32%
Formula
Percentage change = [(828 - 666) / 666] x 100
Subtract the new number by the original number
828 - 666 = 162
162 ÷ 666 = 0.24324324324324326
0.24324324324324326 x 100 = 24.32%