30.93% is the change from 666 to 872
Calculation steps:
[( 872 - 666 ) ÷ 666] x 100 = 30.93%
Formula
Percentage change = [(872 - 666) / 666] x 100
Subtract the new number by the original number
872 - 666 = 206
206 ÷ 666 = 0.30930930930930933
0.30930930930930933 x 100 = 30.93%