145.62% is the change from 331 to 813
Calculation steps:
[( 813 - 331 ) ÷ 331] x 100 = 145.62%
Formula
Percentage change = [(813 - 331) / 331] x 100
Subtract the new number by the original number
813 - 331 = 482
482 ÷ 331 = 1.4561933534743203
1.4561933534743203 x 100 = 145.62%