89.94% is the change from 338 to 642
Calculation steps:
[( 642 - 338 ) ÷ 338] x 100 = 89.94%
Formula
Percentage change = [(642 - 338) / 338] x 100
Subtract the new number by the original number
642 - 338 = 304
304 ÷ 338 = 0.8994082840236687
0.8994082840236687 x 100 = 89.94%