32.4% is the change from 642 to 850
Calculation steps:
[( 850 - 642 ) ÷ 642] x 100 = 32.4%
Formula
Percentage change = [(850 - 642) / 642] x 100
Subtract the new number by the original number
850 - 642 = 208
208 ÷ 642 = 0.32398753894080995
0.32398753894080995 x 100 = 32.4%