146.97% is the change from 330 to 815
Calculation steps:
[( 815 - 330 ) ÷ 330] x 100 = 146.97%
Formula
Percentage change = [(815 - 330) / 330] x 100
Subtract the new number by the original number
815 - 330 = 485
485 ÷ 330 = 1.4696969696969697
1.4696969696969697 x 100 = 146.97%