34.21% is the change from 643 to 863
Calculation steps:
[( 863 - 643 ) ÷ 643] x 100 = 34.21%
Formula
Percentage change = [(863 - 643) / 643] x 100
Subtract the new number by the original number
863 - 643 = 220
220 ÷ 643 = 0.3421461897356143
0.3421461897356143 x 100 = 34.21%