147.09% is the change from 344 to 850
Calculation steps:
[( 850 - 344 ) ÷ 344] x 100 = 147.09%
Formula
Percentage change = [(850 - 344) / 344] x 100
Subtract the new number by the original number
850 - 344 = 506
506 ÷ 344 = 1.4709302325581395
1.4709302325581395 x 100 = 147.09%