33.23% is the change from 644 to 858
Calculation steps:
[( 858 - 644 ) ÷ 644] x 100 = 33.23%
Formula
Percentage change = [(858 - 644) / 644] x 100
Subtract the new number by the original number
858 - 644 = 214
214 ÷ 644 = 0.33229813664596275
0.33229813664596275 x 100 = 33.23%