168.51% is the change from 343 to 921
Calculation steps:
[( 921 - 343 ) ÷ 343] x 100 = 168.51%
Formula
Percentage change = [(921 - 343) / 343] x 100
Subtract the new number by the original number
921 - 343 = 578
578 ÷ 343 = 1.685131195335277
1.685131195335277 x 100 = 168.51%