32.19% is the change from 643 to 850
Calculation steps:
[( 850 - 643 ) ÷ 643] x 100 = 32.19%
Formula
Percentage change = [(850 - 643) / 643] x 100
Subtract the new number by the original number
850 - 643 = 207
207 ÷ 643 = 0.32192846034214617
0.32192846034214617 x 100 = 32.19%