161.74% is the change from 311 to 814
Calculation steps:
[( 814 - 311 ) ÷ 311] x 100 = 161.74%
Formula
Percentage change = [(814 - 311) / 311] x 100
Subtract the new number by the original number
814 - 311 = 503
503 ÷ 311 = 1.617363344051447
1.617363344051447 x 100 = 161.74%