84.27% is the change from 337 to 621
Calculation steps:
[( 621 - 337 ) ÷ 337] x 100 = 84.27%
Formula
Percentage change = [(621 - 337) / 337] x 100
Subtract the new number by the original number
621 - 337 = 284
284 ÷ 337 = 0.8427299703264095
0.8427299703264095 x 100 = 84.27%