163.9% is the change from 349 to 921
Calculation steps:
[( 921 - 349 ) ÷ 349] x 100 = 163.9%
Formula
Percentage change = [(921 - 349) / 349] x 100
Subtract the new number by the original number
921 - 349 = 572
572 ÷ 349 = 1.6389684813753582
1.6389684813753582 x 100 = 163.9%