26.09% is the change from 644 to 812
Calculation steps:
[( 812 - 644 ) ÷ 644] x 100 = 26.09%
Formula
Percentage change = [(812 - 644) / 644] x 100
Subtract the new number by the original number
812 - 644 = 168
168 ÷ 644 = 0.2608695652173913
0.2608695652173913 x 100 = 26.09%