83.14% is the change from 344 to 630
Calculation steps:
[( 630 - 344 ) ÷ 344] x 100 = 83.14%
Formula
Percentage change = [(630 - 344) / 344] x 100
Subtract the new number by the original number
630 - 344 = 286
286 ÷ 344 = 0.8313953488372093
0.8313953488372093 x 100 = 83.14%