145.32% is the change from 331 to 812
Calculation steps:
[( 812 - 331 ) ÷ 331] x 100 = 145.32%
Formula
Percentage change = [(812 - 331) / 331] x 100
Subtract the new number by the original number
812 - 331 = 481
481 ÷ 331 = 1.4531722054380665
1.4531722054380665 x 100 = 145.32%