144.78% is the change from 335 to 820
Calculation steps:
[( 820 - 335 ) ÷ 335] x 100 = 144.78%
Formula
Percentage change = [(820 - 335) / 335] x 100
Subtract the new number by the original number
820 - 335 = 485
485 ÷ 335 = 1.4477611940298507
1.4477611940298507 x 100 = 144.78%