170.74% is the change from 311 to 842
Calculation steps:
[( 842 - 311 ) ÷ 311] x 100 = 170.74%
Formula
Percentage change = [(842 - 311) / 311] x 100
Subtract the new number by the original number
842 - 311 = 531
531 ÷ 311 = 1.707395498392283
1.707395498392283 x 100 = 170.74%