50.35% is the change from 427 to 642
Calculation steps:
[( 642 - 427 ) ÷ 427] x 100 = 50.35%
Formula
Percentage change = [(642 - 427) / 427] x 100
Subtract the new number by the original number
642 - 427 = 215
215 ÷ 427 = 0.5035128805620609
0.5035128805620609 x 100 = 50.35%