30.48% is the change from 666 to 869
Calculation steps:
[( 869 - 666 ) ÷ 666] x 100 = 30.48%
Formula
Percentage change = [(869 - 666) / 666] x 100
Subtract the new number by the original number
869 - 666 = 203
203 ÷ 666 = 0.3048048048048048
0.3048048048048048 x 100 = 30.48%