33.13% is the change from 643 to 856
Calculation steps:
[( 856 - 643 ) ÷ 643] x 100 = 33.13%
Formula
Percentage change = [(856 - 643) / 643] x 100
Subtract the new number by the original number
856 - 643 = 213
213 ÷ 643 = 0.3312597200622084
0.3312597200622084 x 100 = 33.13%