82.11% is the change from 341 to 621
Calculation steps:
[( 621 - 341 ) ÷ 341] x 100 = 82.11%
Formula
Percentage change = [(621 - 341) / 341] x 100
Subtract the new number by the original number
621 - 341 = 280
280 ÷ 341 = 0.8211143695014663
0.8211143695014663 x 100 = 82.11%