149.28% is the change from 349 to 870
Calculation steps:
[( 870 - 349 ) ÷ 349] x 100 = 149.28%
Formula
Percentage change = [(870 - 349) / 349] x 100
Subtract the new number by the original number
870 - 349 = 521
521 ÷ 349 = 1.492836676217765
1.492836676217765 x 100 = 149.28%