145.07% is the change from 335 to 821
Calculation steps:
[( 821 - 335 ) ÷ 335] x 100 = 145.07%
Formula
Percentage change = [(821 - 335) / 335] x 100
Subtract the new number by the original number
821 - 335 = 486
486 ÷ 335 = 1.4507462686567165
1.4507462686567165 x 100 = 145.07%