27.73% is the change from 660 to 843
Calculation steps:
[( 843 - 660 ) ÷ 660] x 100 = 27.73%
Formula
Percentage change = [(843 - 660) / 660] x 100
Subtract the new number by the original number
843 - 660 = 183
183 ÷ 660 = 0.2772727272727273
0.2772727272727273 x 100 = 27.73%