138.57% is the change from 350 to 835
Calculation steps:
[( 835 - 350 ) ÷ 350] x 100 = 138.57%
Formula
Percentage change = [(835 - 350) / 350] x 100
Subtract the new number by the original number
835 - 350 = 485
485 ÷ 350 = 1.3857142857142857
1.3857142857142857 x 100 = 138.57%