145.92% is the change from 331 to 814
Calculation steps:
[( 814 - 331 ) ÷ 331] x 100 = 145.92%
Formula
Percentage change = [(814 - 331) / 331] x 100
Subtract the new number by the original number
814 - 331 = 483
483 ÷ 331 = 1.459214501510574
1.459214501510574 x 100 = 145.92%