32.24% is the change from 639 to 845
Calculation steps:
[( 845 - 639 ) ÷ 639] x 100 = 32.24%
Formula
Percentage change = [(845 - 639) / 639] x 100
Subtract the new number by the original number
845 - 639 = 206
206 ÷ 639 = 0.3223787167449139
0.3223787167449139 x 100 = 32.24%