100.3% is the change from 335 to 671
Calculation steps:
[( 671 - 335 ) ÷ 335] x 100 = 100.3%
Formula
Percentage change = [(671 - 335) / 335] x 100
Subtract the new number by the original number
671 - 335 = 336
336 ÷ 335 = 1.0029850746268656
1.0029850746268656 x 100 = 100.3%