143.73% is the change from 343 to 836
Calculation steps:
[( 836 - 343 ) ÷ 343] x 100 = 143.73%
Formula
Percentage change = [(836 - 343) / 343] x 100
Subtract the new number by the original number
836 - 343 = 493
493 ÷ 343 = 1.4373177842565599
1.4373177842565599 x 100 = 143.73%