26.93% is the change from 661 to 839
Calculation steps:
[( 839 - 661 ) ÷ 661] x 100 = 26.93%
Formula
Percentage change = [(839 - 661) / 661] x 100
Subtract the new number by the original number
839 - 661 = 178
178 ÷ 661 = 0.2692889561270802
0.2692889561270802 x 100 = 26.93%