144.31% is the change from 334 to 816
Calculation steps:
[( 816 - 334 ) ÷ 334] x 100 = 144.31%
Formula
Percentage change = [(816 - 334) / 334] x 100
Subtract the new number by the original number
816 - 334 = 482
482 ÷ 334 = 1.4431137724550898
1.4431137724550898 x 100 = 144.31%