171.06% is the change from 311 to 843
Calculation steps:
[( 843 - 311 ) ÷ 311] x 100 = 171.06%
Formula
Percentage change = [(843 - 311) / 311] x 100
Subtract the new number by the original number
843 - 311 = 532
532 ÷ 311 = 1.7106109324758842
1.7106109324758842 x 100 = 171.06%